drivers/scsi/lpfc/lpfc_els.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23 /* See Fibre Channel protocol T11 FC-LS for details */
  24 #include <linux/blkdev.h>
  25 #include <linux/pci.h>
  26 #include <linux/slab.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/delay.h>
  29
  30 #include <scsi/scsi.h>
  31 #include <scsi/scsi_device.h>
  32 #include <scsi/scsi_host.h>
  33 #include <scsi/scsi_transport_fc.h>
  34 #include <uapi/scsi/fc/fc_fs.h>
  35 #include <uapi/scsi/fc/fc_els.h>
  36
  37 #include "lpfc_hw4.h"
  38 #include "lpfc_hw.h"
  39 #include "lpfc_sli.h"
  40 #include "lpfc_sli4.h"
  41 #include "lpfc_nl.h"
  42 #include "lpfc_disc.h"
  43 #include "lpfc_scsi.h"
  44 #include "lpfc.h"
  45 #include "lpfc_logmsg.h"
  46 #include "lpfc_crtn.h"
  47 #include "lpfc_vport.h"
  48 #include "lpfc_debugfs.h"
  49
  50 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
  51                           struct lpfc_iocbq *);
  52 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
  53                         struct lpfc_iocbq *);
  54 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
  55 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
  56                                 struct lpfc_nodelist *ndlp, uint8_t retry);
  57 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
  58                                   struct lpfc_iocbq *iocb);
  59 static void lpfc_cmpl_els_edc(struct lpfc_hba *phba,
  60                               struct lpfc_iocbq *cmdiocb,
  61                               struct lpfc_iocbq *rspiocb);
  62 static void lpfc_cmpl_els_uvem(struct lpfc_hba *, struct lpfc_iocbq *,
  63                                struct lpfc_iocbq *);
  64
  65 static int lpfc_max_els_tries = 3;
  66
  67 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport);
  68 static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max);
  69 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid);
  70
  71 /**
  72  * lpfc_els_chk_latt - Check host link attention event for a vport
  73  * @vport: pointer to a host virtual N_Port data structure.
  74  *
  75  * This routine checks whether there is an outstanding host link
  76  * attention event during the discovery process with the @vport. It is done
  77  * by reading the HBA's Host Attention (HA) register. If there is any host
  78  * link attention events during this @vport's discovery process, the @vport
  79  * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
  80  * be issued if the link state is not already in host link cleared state,
  81  * and a return code shall indicate whether the host link attention event
  82  * had happened.
  83  *
  84  * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
  85  * state in LPFC_VPORT_READY, the request for checking host link attention
  86  * event will be ignored and a return code shall indicate no host link
  87  * attention event had happened.
  88  *
  89  * Return codes
  90  *   0 - no host link attention event happened
  91  *   1 - host link attention event happened
  92  **/
  93 int
  94 lpfc_els_chk_latt(struct lpfc_vport *vport)
  95 {
  96         struct lpfc_hba  *phba = vport->phba;
  97         uint32_t ha_copy;
  98
  99         if (vport->port_state >= LPFC_VPORT_READY ||
 100             phba->link_state == LPFC_LINK_DOWN ||
 101             phba->sli_rev > LPFC_SLI_REV3)
 102                 return 0;
 103
 104         /* Read the HBA Host Attention Register */
 105         if (lpfc_readl(phba->HAregaddr, &ha_copy))
 106                 return 1;
 107
 108         if (!(ha_copy & HA_LATT))
 109                 return 0;
 110
 111         /* Pending Link Event during Discovery */
 112         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 113                          "0237 Pending Link Event during "
 114                          "Discovery: State x%x\n",
 115                          phba->pport->port_state);
 116
 117         /* CLEAR_LA should re-enable link attention events and
 118          * we should then immediately take a LATT event. The
 119          * LATT processing should call lpfc_linkdown() which
 120          * will cleanup any left over in-progress discovery
 121          * events.
 122          */
 123         set_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
 124
 125         if (phba->link_state != LPFC_CLEAR_LA)
 126                 lpfc_issue_clear_la(phba, vport);
 127
 128         return 1;
 129 }
 130
 131 static bool lpfc_is_els_acc_rsp(struct lpfc_dmabuf *buf)
 132 {
 133         struct fc_els_ls_acc *rsp = buf->virt;
 134
 135         if (rsp && rsp->la_cmd == ELS_LS_ACC)
 136                 return true;
 137         return false;
 138 }
 139
 140 /**
 141  * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
 142  * @vport: pointer to a host virtual N_Port data structure.
 143  * @expect_rsp: flag indicating whether response is expected.
 144  * @cmd_size: size of the ELS command.
 145  * @retry: number of retries to the command when it fails.
 146  * @ndlp: pointer to a node-list data structure.
 147  * @did: destination identifier.
 148  * @elscmd: the ELS command code.
 149  *
 150  * This routine is used for allocating a lpfc-IOCB data structure from
 151  * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
 152  * passed into the routine for discovery state machine to issue an Extended
 153  * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
 154  * and preparation routine that is used by all the discovery state machine
 155  * routines and the ELS command-specific fields will be later set up by
 156  * the individual discovery machine routines after calling this routine
 157  * allocating and preparing a generic IOCB data structure. It fills in the
 158  * Buffer Descriptor Entries (BDEs), allocates buffers for both command
 159  * payload and response payload (if expected). The reference count on the
 160  * ndlp is incremented by 1 and the reference to the ndlp is put into
 161  * ndlp of the IOCB data structure for this IOCB to hold the ndlp
 162  * reference for the command's callback function to access later.
 163  *
 164  * Return code
 165  *   Pointer to the newly allocated/prepared els iocb data structure
 166  *   NULL - when els iocb data structure allocation/preparation failed
 167  **/
 168 struct lpfc_iocbq *
 169 lpfc_prep_els_iocb(struct lpfc_vport *vport, u8 expect_rsp,
 170                    u16 cmd_size, u8 retry,
 171                    struct lpfc_nodelist *ndlp, u32 did,
 172                    u32 elscmd)
 173 {
 174         struct lpfc_hba  *phba = vport->phba;
 175         struct lpfc_iocbq *elsiocb;
 176         struct lpfc_dmabuf *pcmd, *prsp, *pbuflist, *bmp;
 177         struct ulp_bde64_le *bpl;
 178         u32 timeout = 0;
 179
 180         if (!lpfc_is_link_up(phba))
 181                 return NULL;
 182
 183         /* Allocate buffer for  command iocb */
 184         elsiocb = lpfc_sli_get_iocbq(phba);
 185         if (!elsiocb)
 186                 return NULL;
 187
 188         /*
 189          * If this command is for fabric controller and HBA running
 190          * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
 191          */
 192         if (did == Fabric_DID &&
 193             test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) &&
 194             (elscmd == ELS_CMD_FLOGI ||
 195              elscmd == ELS_CMD_FDISC ||
 196              elscmd == ELS_CMD_LOGO))
 197                 switch (elscmd) {
 198                 case ELS_CMD_FLOGI:
 199                         elsiocb->cmd_flag |=
 200                                 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
 201                                  & LPFC_FIP_ELS_ID_MASK);
 202                         break;
 203                 case ELS_CMD_FDISC:
 204                         elsiocb->cmd_flag |=
 205                                 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
 206                                  & LPFC_FIP_ELS_ID_MASK);
 207                         break;
 208                 case ELS_CMD_LOGO:
 209                         elsiocb->cmd_flag |=
 210                                 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
 211                                  & LPFC_FIP_ELS_ID_MASK);
 212                         break;
 213                 }
 214         else
 215                 elsiocb->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK;
 216
 217         /* fill in BDEs for command */
 218         /* Allocate buffer for command payload */
 219         pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL);
 220         if (pcmd)
 221                 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
 222         if (!pcmd || !pcmd->virt)
 223                 goto els_iocb_free_pcmb_exit;
 224
 225         INIT_LIST_HEAD(&pcmd->list);
 226
 227         /* Allocate buffer for response payload */
 228         if (expect_rsp) {
 229                 prsp = kmalloc(sizeof(*prsp), GFP_KERNEL);
 230                 if (prsp)
 231                         prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
 232                                                      &prsp->phys);
 233                 if (!prsp || !prsp->virt)
 234                         goto els_iocb_free_prsp_exit;
 235                 INIT_LIST_HEAD(&prsp->list);
 236         } else {
 237                 prsp = NULL;
 238         }
 239
 240         /* Allocate buffer for Buffer ptr list */
 241         pbuflist = kmalloc(sizeof(*pbuflist), GFP_KERNEL);
 242         if (pbuflist)
 243                 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
 244                                                  &pbuflist->phys);
 245         if (!pbuflist || !pbuflist->virt)
 246                 goto els_iocb_free_pbuf_exit;
 247
 248         INIT_LIST_HEAD(&pbuflist->list);
 249
 250         if (expect_rsp) {
 251                 switch (elscmd) {
 252                 case ELS_CMD_FLOGI:
 253                         timeout = FF_DEF_RATOV * 2;
 254                         break;
 255                 case ELS_CMD_LOGO:
 256                         timeout = phba->fc_ratov;
 257                         break;
 258                 default:
 259                         timeout = phba->fc_ratov * 2;
 260                 }
 261
 262                 /* Fill SGE for the num bde count */
 263                 elsiocb->num_bdes = 2;
 264         }
 265
 266         if (phba->sli_rev == LPFC_SLI_REV4)
 267                 bmp = pcmd;
 268         else
 269                 bmp = pbuflist;
 270
 271         lpfc_sli_prep_els_req_rsp(phba, elsiocb, vport, bmp, cmd_size, did,
 272                                   elscmd, timeout, expect_rsp);
 273
 274         bpl = (struct ulp_bde64_le *)pbuflist->virt;
 275         bpl->addr_low = cpu_to_le32(putPaddrLow(pcmd->phys));
 276         bpl->addr_high = cpu_to_le32(putPaddrHigh(pcmd->phys));
 277         bpl->type_size = cpu_to_le32(cmd_size);
 278         bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
 279
 280         if (expect_rsp) {
 281                 bpl++;
 282                 bpl->addr_low = cpu_to_le32(putPaddrLow(prsp->phys));
 283                 bpl->addr_high = cpu_to_le32(putPaddrHigh(prsp->phys));
 284                 bpl->type_size = cpu_to_le32(FCELSSIZE);
 285                 bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
 286         }
 287
 288         elsiocb->cmd_dmabuf = pcmd;
 289         elsiocb->bpl_dmabuf = pbuflist;
 290         elsiocb->retry = retry;
 291         elsiocb->vport = vport;
 292         elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
 293
 294         if (prsp)
 295                 list_add(&prsp->list, &pcmd->list);
 296         if (expect_rsp) {
 297                 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
 298                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 299                                  "0116 Xmit ELS command x%x to remote "
 300                                  "NPORT x%x I/O tag: x%x, port state:x%x "
 301                                  "rpi x%x fc_flag:x%lx\n",
 302                                  elscmd, did, elsiocb->iotag,
 303                                  vport->port_state, ndlp->nlp_rpi,
 304                                  vport->fc_flag);
 305         } else {
 306                 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
 307                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 308                                  "0117 Xmit ELS response x%x to remote "
 309                                  "NPORT x%x I/O tag: x%x, size: x%x "
 310                                  "port_state x%x  rpi x%x fc_flag x%lx\n",
 311                                  elscmd, ndlp->nlp_DID, elsiocb->iotag,
 312                                  cmd_size, vport->port_state,
 313                                  ndlp->nlp_rpi, vport->fc_flag);
 314         }
 315
 316         return elsiocb;
 317
 318 els_iocb_free_pbuf_exit:
 319         if (expect_rsp)
 320                 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
 321         kfree(pbuflist);
 322
 323 els_iocb_free_prsp_exit:
 324         lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
 325         kfree(prsp);
 326
 327 els_iocb_free_pcmb_exit:
 328         kfree(pcmd);
 329         lpfc_sli_release_iocbq(phba, elsiocb);
 330         return NULL;
 331 }
 332
 333 /**
 334  * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
 335  * @vport: pointer to a host virtual N_Port data structure.
 336  *
 337  * This routine issues a fabric registration login for a @vport. An
 338  * active ndlp node with Fabric_DID must already exist for this @vport.
 339  * The routine invokes two mailbox commands to carry out fabric registration
 340  * login through the HBA firmware: the first mailbox command requests the
 341  * HBA to perform link configuration for the @vport; and the second mailbox
 342  * command requests the HBA to perform the actual fabric registration login
 343  * with the @vport.
 344  *
 345  * Return code
 346  *   0 - successfully issued fabric registration login for @vport
 347  *   -ENXIO -- failed to issue fabric registration login for @vport
 348  **/
 349 int
 350 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
 351 {
 352         struct lpfc_hba  *phba = vport->phba;
 353         LPFC_MBOXQ_t *mbox;
 354         struct lpfc_nodelist *ndlp;
 355         struct serv_parm *sp;
 356         int rc;
 357         int err = 0;
 358
 359         sp = &phba->fc_fabparam;
 360         ndlp = lpfc_findnode_did(vport, Fabric_DID);
 361         if (!ndlp) {
 362                 err = 1;
 363                 goto fail;
 364         }
 365
 366         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 367         if (!mbox) {
 368                 err = 2;
 369                 goto fail;
 370         }
 371
 372         vport->port_state = LPFC_FABRIC_CFG_LINK;
 373         lpfc_config_link(phba, mbox);
 374         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 375         mbox->vport = vport;
 376
 377         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 378         if (rc == MBX_NOT_FINISHED) {
 379                 err = 3;
 380                 goto fail_free_mbox;
 381         }
 382
 383         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 384         if (!mbox) {
 385                 err = 4;
 386                 goto fail;
 387         }
 388         rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
 389                           ndlp->nlp_rpi);
 390         if (rc) {
 391                 err = 5;
 392                 goto fail_free_mbox;
 393         }
 394
 395         mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
 396         mbox->vport = vport;
 397         /* increment the reference count on ndlp to hold reference
 398          * for the callback routine.
 399          */
 400         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
 401         if (!mbox->ctx_ndlp) {
 402                 err = 6;
 403                 goto fail_free_mbox;
 404         }
 405
 406         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 407         if (rc == MBX_NOT_FINISHED) {
 408                 err = 7;
 409                 goto fail_issue_reg_login;
 410         }
 411
 412         return 0;
 413
 414 fail_issue_reg_login:
 415         /* decrement the reference count on ndlp just incremented
 416          * for the failed mbox command.
 417          */
 418         lpfc_nlp_put(ndlp);
 419 fail_free_mbox:
 420         lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
 421 fail:
 422         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 423         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 424                          "0249 Cannot issue Register Fabric login: Err %d\n",
 425                          err);
 426         return -ENXIO;
 427 }
 428
 429 /**
 430  * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
 431  * @vport: pointer to a host virtual N_Port data structure.
 432  *
 433  * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
 434  * the @vport. This mailbox command is necessary for SLI4 port only.
 435  *
 436  * Return code
 437  *   0 - successfully issued REG_VFI for @vport
 438  *   A failure code otherwise.
 439  **/
 440 int
 441 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
 442 {
 443         struct lpfc_hba  *phba = vport->phba;
 444         LPFC_MBOXQ_t *mboxq = NULL;
 445         struct lpfc_nodelist *ndlp;
 446         struct lpfc_dmabuf *dmabuf = NULL;
 447         int rc = 0;
 448
 449         /* move forward in case of SLI4 FC port loopback test and pt2pt mode */
 450         if ((phba->sli_rev == LPFC_SLI_REV4) &&
 451             !(phba->link_flag & LS_LOOPBACK_MODE) &&
 452             !test_bit(FC_PT2PT, &vport->fc_flag)) {
 453                 ndlp = lpfc_findnode_did(vport, Fabric_DID);
 454                 if (!ndlp) {
 455                         rc = -ENODEV;
 456                         goto fail;
 457                 }
 458         }
 459
 460         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 461         if (!mboxq) {
 462                 rc = -ENOMEM;
 463                 goto fail;
 464         }
 465
 466         /* Supply CSP's only if we are fabric connect or pt-to-pt connect */
 467         if (test_bit(FC_FABRIC, &vport->fc_flag) ||
 468             test_bit(FC_PT2PT, &vport->fc_flag)) {
 469                 rc = lpfc_mbox_rsrc_prep(phba, mboxq);
 470                 if (rc) {
 471                         rc = -ENOMEM;
 472                         goto fail_mbox;
 473                 }
 474                 dmabuf = mboxq->ctx_buf;
 475                 memcpy(dmabuf->virt, &phba->fc_fabparam,
 476                        sizeof(struct serv_parm));
 477         }
 478
 479         vport->port_state = LPFC_FABRIC_CFG_LINK;
 480         if (dmabuf) {
 481                 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
 482                 /* lpfc_reg_vfi memsets the mailbox.  Restore the ctx_buf. */
 483                 mboxq->ctx_buf = dmabuf;
 484         } else {
 485                 lpfc_reg_vfi(mboxq, vport, 0);
 486         }
 487
 488         mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
 489         mboxq->vport = vport;
 490         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
 491         if (rc == MBX_NOT_FINISHED) {
 492                 rc = -ENXIO;
 493                 goto fail_mbox;
 494         }
 495         return 0;
 496
 497 fail_mbox:
 498         lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
 499 fail:
 500         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 501         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 502                          "0289 Issue Register VFI failed: Err %d\n", rc);
 503         return rc;
 504 }
 505
 506 /**
 507  * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login
 508  * @vport: pointer to a host virtual N_Port data structure.
 509  *
 510  * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for
 511  * the @vport. This mailbox command is necessary for SLI4 port only.
 512  *
 513  * Return code
 514  *   0 - successfully issued REG_VFI for @vport
 515  *   A failure code otherwise.
 516  **/
 517 int
 518 lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
 519 {
 520         struct lpfc_hba *phba = vport->phba;
 521         LPFC_MBOXQ_t *mboxq;
 522         int rc;
 523
 524         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 525         if (!mboxq) {
 526                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 527                                 "2556 UNREG_VFI mbox allocation failed"
 528                                 "HBA state x%x\n", phba->pport->port_state);
 529                 return -ENOMEM;
 530         }
 531
 532         lpfc_unreg_vfi(mboxq, vport);
 533         mboxq->vport = vport;
 534         mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl;
 535
 536         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
 537         if (rc == MBX_NOT_FINISHED) {
 538                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 539                                 "2557 UNREG_VFI issue mbox failed rc x%x "
 540                                 "HBA state x%x\n",
 541                                 rc, phba->pport->port_state);
 542                 mempool_free(mboxq, phba->mbox_mem_pool);
 543                 return -EIO;
 544         }
 545
 546         clear_bit(FC_VFI_REGISTERED, &vport->fc_flag);
 547         return 0;
 548 }
 549
 550 /**
 551  * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean.
 552  * @vport: pointer to a host virtual N_Port data structure.
 553  * @sp: pointer to service parameter data structure.
 554  *
 555  * This routine is called from FLOGI/FDISC completion handler functions.
 556  * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric
 557  * node nodename is changed in the completion service parameter else return
 558  * 0. This function also set flag in the vport data structure to delay
 559  * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit
 560  * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric
 561  * node nodename is changed in the completion service parameter.
 562  *
 563  * Return code
 564  *   0 - FCID and Fabric Nodename and Fabric portname is not changed.
 565  *   1 - FCID or Fabric Nodename or Fabric portname is changed.
 566  *
 567  **/
 568 static uint8_t
 569 lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
 570                 struct serv_parm *sp)
 571 {
 572         struct lpfc_hba *phba = vport->phba;
 573         uint8_t fabric_param_changed = 0;
 574
 575         if ((vport->fc_prevDID != vport->fc_myDID) ||
 576                 memcmp(&vport->fabric_portname, &sp->portName,
 577                         sizeof(struct lpfc_name)) ||
 578                 memcmp(&vport->fabric_nodename, &sp->nodeName,
 579                         sizeof(struct lpfc_name)) ||
 580                 (vport->vport_flag & FAWWPN_PARAM_CHG)) {
 581                 fabric_param_changed = 1;
 582                 vport->vport_flag &= ~FAWWPN_PARAM_CHG;
 583         }
 584         /*
 585          * Word 1 Bit 31 in common service parameter is overloaded.
 586          * Word 1 Bit 31 in FLOGI request is multiple NPort request
 587          * Word 1 Bit 31 in FLOGI response is clean address bit
 588          *
 589          * If fabric parameter is changed and clean address bit is
 590          * cleared delay nport discovery if
 591          * - vport->fc_prevDID != 0 (not initial discovery) OR
 592          * - lpfc_delay_discovery module parameter is set.
 593          */
 594         if (fabric_param_changed && !sp->cmn.clean_address_bit &&
 595             (vport->fc_prevDID || phba->cfg_delay_discovery))
 596                 set_bit(FC_DISC_DELAYED, &vport->fc_flag);
 597
 598         return fabric_param_changed;
 599 }
 600
 601
 602 /**
 603  * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
 604  * @vport: pointer to a host virtual N_Port data structure.
 605  * @ndlp: pointer to a node-list data structure.
 606  * @sp: pointer to service parameter data structure.
 607  * @ulp_word4: command response value
 608  *
 609  * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
 610  * function to handle the completion of a Fabric Login (FLOGI) into a fabric
 611  * port in a fabric topology. It properly sets up the parameters to the @ndlp
 612  * from the IOCB response. It also check the newly assigned N_Port ID to the
 613  * @vport against the previously assigned N_Port ID. If it is different from
 614  * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
 615  * is invoked on all the remaining nodes with the @vport to unregister the
 616  * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
 617  * is invoked to register login to the fabric.
 618  *
 619  * Return code
 620  *   0 - Success (currently, always return 0)
 621  **/
 622 static int
 623 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 624                            struct serv_parm *sp, uint32_t ulp_word4)
 625 {
 626         struct lpfc_hba  *phba = vport->phba;
 627         struct lpfc_nodelist *np;
 628         struct lpfc_nodelist *next_np;
 629         uint8_t fabric_param_changed;
 630
 631         set_bit(FC_FABRIC, &vport->fc_flag);
 632
 633         phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
 634         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
 635                 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
 636
 637         phba->fc_edtovResol = sp->cmn.edtovResolution;
 638         phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
 639
 640         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP)
 641                 set_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
 642
 643         vport->fc_myDID = ulp_word4 & Mask_DID;
 644         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
 645         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
 646         ndlp->nlp_class_sup = 0;
 647         if (sp->cls1.classValid)
 648                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 649         if (sp->cls2.classValid)
 650                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 651         if (sp->cls3.classValid)
 652                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 653         if (sp->cls4.classValid)
 654                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 655         ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 656                                 sp->cmn.bbRcvSizeLsb;
 657
 658         fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
 659         if (fabric_param_changed) {
 660                 /* Reset FDMI attribute masks based on config parameter */
 661                 if (phba->cfg_enable_SmartSAN ||
 662                     (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
 663                         /* Setup appropriate attribute masks */
 664                         vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
 665                         if (phba->cfg_enable_SmartSAN)
 666                                 vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
 667                         else
 668                                 vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
 669                 } else {
 670                         vport->fdmi_hba_mask = 0;
 671                         vport->fdmi_port_mask = 0;
 672                 }
 673
 674         }
 675         memcpy(&vport->fabric_portname, &sp->portName,
 676                         sizeof(struct lpfc_name));
 677         memcpy(&vport->fabric_nodename, &sp->nodeName,
 678                         sizeof(struct lpfc_name));
 679         memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 680
 681         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
 682                 if (sp->cmn.response_multiple_NPort) {
 683                         lpfc_printf_vlog(vport, KERN_WARNING,
 684                                          LOG_ELS | LOG_VPORT,
 685                                          "1816 FLOGI NPIV supported, "
 686                                          "response data 0x%x\n",
 687                                          sp->cmn.response_multiple_NPort);
 688                         spin_lock_irq(&phba->hbalock);
 689                         phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
 690                         spin_unlock_irq(&phba->hbalock);
 691                 } else {
 692                         /* Because we asked f/w for NPIV it still expects us
 693                         to call reg_vnpid at least for the physical host */
 694                         lpfc_printf_vlog(vport, KERN_WARNING,
 695                                          LOG_ELS | LOG_VPORT,
 696                                          "1817 Fabric does not support NPIV "
 697                                          "- configuring single port mode.\n");
 698                         spin_lock_irq(&phba->hbalock);
 699                         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 700                         spin_unlock_irq(&phba->hbalock);
 701                 }
 702         }
 703
 704         /*
 705          * For FC we need to do some special processing because of the SLI
 706          * Port's default settings of the Common Service Parameters.
 707          */
 708         if ((phba->sli_rev == LPFC_SLI_REV4) &&
 709             (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) {
 710                 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
 711                 if (fabric_param_changed)
 712                         lpfc_unregister_fcf_prep(phba);
 713
 714                 /* This should just update the VFI CSPs*/
 715                 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
 716                         lpfc_issue_reg_vfi(vport);
 717         }
 718
 719         if (fabric_param_changed &&
 720                 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
 721
 722                 /* If our NportID changed, we need to ensure all
 723                  * remaining NPORTs get unreg_login'ed.
 724                  */
 725                 list_for_each_entry_safe(np, next_np,
 726                                         &vport->fc_nodes, nlp_listp) {
 727                         if ((np->nlp_state != NLP_STE_NPR_NODE) ||
 728                             !test_bit(NLP_NPR_ADISC, &np->nlp_flag))
 729                                 continue;
 730                         clear_bit(NLP_NPR_ADISC, &np->nlp_flag);
 731                         lpfc_unreg_rpi(vport, np);
 732                 }
 733                 lpfc_cleanup_pending_mbox(vport);
 734
 735                 if (phba->sli_rev == LPFC_SLI_REV4) {
 736                         lpfc_sli4_unreg_all_rpis(vport);
 737                         lpfc_mbx_unreg_vpi(vport);
 738                         set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
 739                 }
 740
 741                 /*
 742                  * For SLI3 and SLI4, the VPI needs to be reregistered in
 743                  * response to this fabric parameter change event.
 744                  */
 745                 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
 746         } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
 747                    !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
 748                         /*
 749                          * Driver needs to re-reg VPI in order for f/w
 750                          * to update the MAC address.
 751                          */
 752                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 753                         lpfc_register_new_vport(phba, vport, ndlp);
 754                         return 0;
 755         }
 756
 757         if (phba->sli_rev < LPFC_SLI_REV4) {
 758                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
 759                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
 760                     test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag))
 761                         lpfc_register_new_vport(phba, vport, ndlp);
 762                 else
 763                         lpfc_issue_fabric_reglogin(vport);
 764         } else {
 765                 ndlp->nlp_type |= NLP_FABRIC;
 766                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 767                 if ((!test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) &&
 768                     (vport->vpi_state & LPFC_VPI_REGISTERED)) {
 769                         lpfc_start_fdiscs(phba);
 770                         lpfc_do_scr_ns_plogi(phba, vport);
 771                 } else if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
 772                         lpfc_issue_init_vpi(vport);
 773                 else {
 774                         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 775                                         "3135 Need register VFI: (x%x/%x)\n",
 776                                         vport->fc_prevDID, vport->fc_myDID);
 777                         lpfc_issue_reg_vfi(vport);
 778                 }
 779         }
 780         return 0;
 781 }
 782
 783 /**
 784  * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
 785  * @vport: pointer to a host virtual N_Port data structure.
 786  * @ndlp: pointer to a node-list data structure.
 787  * @sp: pointer to service parameter data structure.
 788  *
 789  * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
 790  * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
 791  * in a point-to-point topology. First, the @vport's N_Port Name is compared
 792  * with the received N_Port Name: if the @vport's N_Port Name is greater than
 793  * the received N_Port Name lexicographically, this node shall assign local
 794  * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
 795  * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
 796  * this node shall just wait for the remote node to issue PLOGI and assign
 797  * N_Port IDs.
 798  *
 799  * Return code
 800  *   0 - Success
 801  *   -ENXIO - Fail
 802  **/
 803 static int
 804 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 805                           struct serv_parm *sp)
 806 {
 807         struct lpfc_hba  *phba = vport->phba;
 808         LPFC_MBOXQ_t *mbox;
 809         int rc;
 810
 811         clear_bit(FC_FABRIC, &vport->fc_flag);
 812         clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
 813         set_bit(FC_PT2PT, &vport->fc_flag);
 814
 815         /* If we are pt2pt with another NPort, force NPIV off! */
 816         phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 817
 818         /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
 819         if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
 820                 lpfc_unregister_fcf_prep(phba);
 821                 clear_bit(FC_VFI_REGISTERED, &vport->fc_flag);
 822                 phba->fc_topology_changed = 0;
 823         }
 824
 825         rc = memcmp(&vport->fc_portname, &sp->portName,
 826                     sizeof(vport->fc_portname));
 827
 828         if (rc >= 0) {
 829                 /* This side will initiate the PLOGI */
 830                 set_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
 831
 832                 /*
 833                  * N_Port ID cannot be 0, set our Id to LocalID
 834                  * the other side will be RemoteID.
 835                  */
 836
 837                 /* not equal */
 838                 if (rc)
 839                         vport->fc_myDID = PT2PT_LocalID;
 840
 841                 /* If not registered with a transport, decrement ndlp reference
 842                  * count indicating that ndlp can be safely released when other
 843                  * references are removed.
 844                  */
 845                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
 846                         lpfc_nlp_put(ndlp);
 847
 848                 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
 849                 if (!ndlp) {
 850                         /*
 851                          * Cannot find existing Fabric ndlp, so allocate a
 852                          * new one
 853                          */
 854                         ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID);
 855                         if (!ndlp)
 856                                 goto fail;
 857                 }
 858
 859                 memcpy(&ndlp->nlp_portname, &sp->portName,
 860                        sizeof(struct lpfc_name));
 861                 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
 862                        sizeof(struct lpfc_name));
 863                 /* Set state will put ndlp onto node list if not already done */
 864                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 865                 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
 866
 867                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 868                 if (!mbox)
 869                         goto fail;
 870
 871                 lpfc_config_link(phba, mbox);
 872
 873                 mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
 874                 mbox->vport = vport;
 875                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 876                 if (rc == MBX_NOT_FINISHED) {
 877                         mempool_free(mbox, phba->mbox_mem_pool);
 878                         goto fail;
 879                 }
 880         } else {
 881                 /* This side will wait for the PLOGI. If not registered with
 882                  * a transport, decrement node reference count indicating that
 883                  * ndlp can be released when other references are removed.
 884                  */
 885                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
 886                         lpfc_nlp_put(ndlp);
 887
 888                 /* Start discovery - this should just do CLEAR_LA */
 889                 lpfc_disc_start(vport);
 890         }
 891
 892         return 0;
 893 fail:
 894         return -ENXIO;
 895 }
 896
 897 /**
 898  * lpfc_cmpl_els_flogi - Completion callback function for flogi
 899  * @phba: pointer to lpfc hba data structure.
 900  * @cmdiocb: pointer to lpfc command iocb data structure.
 901  * @rspiocb: pointer to lpfc response iocb data structure.
 902  *
 903  * This routine is the top-level completion callback function for issuing
 904  * a Fabric Login (FLOGI) command. If the response IOCB reported error,
 905  * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
 906  * retry has been made (either immediately or delayed with lpfc_els_retry()
 907  * returning 1), the command IOCB will be released and function returned.
 908  * If the retry attempt has been given up (possibly reach the maximum
 909  * number of retries), one additional decrement of ndlp reference shall be
 910  * invoked before going out after releasing the command IOCB. This will
 911  * actually release the remote node (Note, lpfc_els_free_iocb() will also
 912  * invoke one decrement of ndlp reference count). If no error reported in
 913  * the IOCB status, the command Port ID field is used to determine whether
 914  * this is a point-to-point topology or a fabric topology: if the Port ID
 915  * field is assigned, it is a fabric topology; otherwise, it is a
 916  * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
 917  * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
 918  * specific topology completion conditions.
 919  **/
 920 static void
 921 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 922                     struct lpfc_iocbq *rspiocb)
 923 {
 924         struct lpfc_vport *vport = cmdiocb->vport;
 925         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
 926         IOCB_t *irsp;
 927         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
 928         struct serv_parm *sp;
 929         uint16_t fcf_index;
 930         int rc;
 931         u32 ulp_status, ulp_word4, tmo;
 932         bool flogi_in_retry = false;
 933
 934         /* Check to see if link went down during discovery */
 935         if (lpfc_els_chk_latt(vport)) {
 936                 /* One additional decrement on node reference count to
 937                  * trigger the release of the node
 938                  */
 939                 if (!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
 940                         lpfc_nlp_put(ndlp);
 941                 goto out;
 942         }
 943
 944         ulp_status = get_job_ulpstatus(phba, rspiocb);
 945         ulp_word4 = get_job_word4(phba, rspiocb);
 946
 947         if (phba->sli_rev == LPFC_SLI_REV4) {
 948                 tmo = get_wqe_tmo(cmdiocb);
 949         } else {
 950                 irsp = &rspiocb->iocb;
 951                 tmo = irsp->ulpTimeout;
 952         }
 953
 954         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 955                 "FLOGI cmpl:      status:x%x/x%x state:x%x",
 956                 ulp_status, ulp_word4,
 957                 vport->port_state);
 958
 959         if (ulp_status) {
 960                 /*
 961                  * In case of FIP mode, perform roundrobin FCF failover
 962                  * due to new FCF discovery
 963                  */
 964                 if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) &&
 965                     (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
 966                         if (phba->link_state < LPFC_LINK_UP)
 967                                 goto stop_rr_fcf_flogi;
 968                         if ((phba->fcoe_cvl_eventtag_attn ==
 969                              phba->fcoe_cvl_eventtag) &&
 970                             (ulp_status == IOSTAT_LOCAL_REJECT) &&
 971                             ((ulp_word4 & IOERR_PARAM_MASK) ==
 972                             IOERR_SLI_ABORTED))
 973                                 goto stop_rr_fcf_flogi;
 974                         else
 975                                 phba->fcoe_cvl_eventtag_attn =
 976                                         phba->fcoe_cvl_eventtag;
 977                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
 978                                         "2611 FLOGI FCF (x%x), "
 979                                         "status:x%x/x%x, tmo:x%x, perform "
 980                                         "roundrobin FCF failover\n",
 981                                         phba->fcf.current_rec.fcf_indx,
 982                                         ulp_status, ulp_word4, tmo);
 983                         lpfc_sli4_set_fcf_flogi_fail(phba,
 984                                         phba->fcf.current_rec.fcf_indx);
 985                         fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
 986                         rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index);
 987                         if (rc)
 988                                 goto out;
 989                 }
 990
 991 stop_rr_fcf_flogi:
 992                 /* FLOGI failure */
 993                 if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
 994                       ((ulp_word4 & IOERR_PARAM_MASK) ==
 995                                         IOERR_LOOP_OPEN_FAILURE)))
 996                         lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
 997                                       "2858 FLOGI Status:x%x/x%x TMO"
 998                                       ":x%x Data x%lx x%x\n",
 999                                       ulp_status, ulp_word4, tmo,
1000                                       phba->hba_flag, phba->fcf.fcf_flag);
1001
1002                 /* Check for retry */
1003                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1004                         /* Address a timing race with dev_loss.  If dev_loss
1005                          * is active on this FPort node, put the initial ref
1006                          * count back to stop premature node release actions.
1007                          */
1008                         lpfc_check_nlp_post_devloss(vport, ndlp);
1009                         flogi_in_retry = true;
1010                         goto out;
1011                 }
1012
1013                 /* The FLOGI will not be retried.  If the FPort node is not
1014                  * registered with the SCSI transport, remove the initial
1015                  * reference to trigger node release.
1016                  */
1017                 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag) &&
1018                     !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
1019                         lpfc_nlp_put(ndlp);
1020
1021                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
1022                                  "0150 FLOGI Status:x%x/x%x "
1023                                  "xri x%x TMO:x%x refcnt %d\n",
1024                                  ulp_status, ulp_word4, cmdiocb->sli4_xritag,
1025                                  tmo, kref_read(&ndlp->kref));
1026
1027                 /* If this is not a loop open failure, bail out */
1028                 if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
1029                       ((ulp_word4 & IOERR_PARAM_MASK) ==
1030                                         IOERR_LOOP_OPEN_FAILURE))) {
1031                         /* Warn FLOGI status */
1032                         lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
1033                                       "0100 FLOGI Status:x%x/x%x "
1034                                       "TMO:x%x\n",
1035                                       ulp_status, ulp_word4, tmo);
1036                         goto flogifail;
1037                 }
1038
1039                 /* FLOGI failed, so there is no fabric */
1040                 clear_bit(FC_FABRIC, &vport->fc_flag);
1041                 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
1042                 clear_bit(FC_PT2PT_NO_NVME, &vport->fc_flag);
1043
1044                 /* If private loop, then allow max outstanding els to be
1045                  * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
1046                  * alpa map would take too long otherwise.
1047                  */
1048                 if (phba->alpa_map[0] == 0)
1049                         vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
1050                 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1051                     (!test_bit(FC_VFI_REGISTERED, &vport->fc_flag) ||
1052                      (vport->fc_prevDID != vport->fc_myDID) ||
1053                         phba->fc_topology_changed)) {
1054                         if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) {
1055                                 if (phba->fc_topology_changed) {
1056                                         lpfc_unregister_fcf_prep(phba);
1057                                         clear_bit(FC_VFI_REGISTERED,
1058                                                   &vport->fc_flag);
1059                                         phba->fc_topology_changed = 0;
1060                                 } else {
1061                                         lpfc_sli4_unreg_all_rpis(vport);
1062                                 }
1063                         }
1064
1065                         /* Do not register VFI if the driver aborted FLOGI */
1066                         if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
1067                                 lpfc_issue_reg_vfi(vport);
1068
1069                         goto out;
1070                 }
1071                 goto flogifail;
1072         }
1073         clear_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag);
1074         clear_bit(FC_VPORT_LOGO_RCVD, &vport->fc_flag);
1075
1076         /*
1077          * The FLOGI succeeded.  Sync the data for the CPU before
1078          * accessing it.
1079          */
1080         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1081         if (!prsp)
1082                 goto out;
1083         if (!lpfc_is_els_acc_rsp(prsp))
1084                 goto out;
1085         sp = prsp->virt + sizeof(uint32_t);
1086
1087         /* FLOGI completes successfully */
1088         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1089                          "0101 FLOGI completes successfully, I/O tag:x%x "
1090                          "xri x%x Data: x%x x%x x%x x%x x%x x%lx x%x %d\n",
1091                          cmdiocb->iotag, cmdiocb->sli4_xritag,
1092                          ulp_word4, sp->cmn.e_d_tov,
1093                          sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution,
1094                          vport->port_state, vport->fc_flag,
1095                          sp->cmn.priority_tagging, kref_read(&ndlp->kref));
1096
1097         /* reinitialize the VMID datastructure before returning */
1098         if (lpfc_is_vmid_enabled(phba)) {
1099                 lpfc_reinit_vmid(vport);
1100                 vport->vmid_flag = 0;
1101         }
1102         if (sp->cmn.priority_tagging)
1103                 vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
1104                                                   LPFC_VMID_TYPE_PRIO);
1105
1106         /*
1107          * Address a timing race with dev_loss.  If dev_loss is active on
1108          * this FPort node, put the initial ref count back to stop premature
1109          * node release actions.
1110          */
1111         lpfc_check_nlp_post_devloss(vport, ndlp);
1112         if (vport->port_state == LPFC_FLOGI) {
1113                 /*
1114                  * If Common Service Parameters indicate Nport
1115                  * we are point to point, if Fport we are Fabric.
1116                  */
1117                 if (sp->cmn.fPort)
1118                         rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp,
1119                                                         ulp_word4);
1120                 else if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag))
1121                         rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
1122                 else {
1123                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1124                                 "2831 FLOGI response with cleared Fabric "
1125                                 "bit fcf_index 0x%x "
1126                                 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
1127                                 "Fabric Name "
1128                                 "%02x%02x%02x%02x%02x%02x%02x%02x\n",
1129                                 phba->fcf.current_rec.fcf_indx,
1130                                 phba->fcf.current_rec.switch_name[0],
1131                                 phba->fcf.current_rec.switch_name[1],
1132                                 phba->fcf.current_rec.switch_name[2],
1133                                 phba->fcf.current_rec.switch_name[3],
1134                                 phba->fcf.current_rec.switch_name[4],
1135                                 phba->fcf.current_rec.switch_name[5],
1136                                 phba->fcf.current_rec.switch_name[6],
1137                                 phba->fcf.current_rec.switch_name[7],
1138                                 phba->fcf.current_rec.fabric_name[0],
1139                                 phba->fcf.current_rec.fabric_name[1],
1140                                 phba->fcf.current_rec.fabric_name[2],
1141                                 phba->fcf.current_rec.fabric_name[3],
1142                                 phba->fcf.current_rec.fabric_name[4],
1143                                 phba->fcf.current_rec.fabric_name[5],
1144                                 phba->fcf.current_rec.fabric_name[6],
1145                                 phba->fcf.current_rec.fabric_name[7]);
1146
1147                         lpfc_nlp_put(ndlp);
1148                         spin_lock_irq(&phba->hbalock);
1149                         phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1150                         spin_unlock_irq(&phba->hbalock);
1151                         clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1152                         clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag);
1153                         phba->fcf.fcf_redisc_attempted = 0; /* reset */
1154                         goto out;
1155                 }
1156                 if (!rc) {
1157                         /* Mark the FCF discovery process done */
1158                         if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag))
1159                                 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
1160                                                 LOG_ELS,
1161                                                 "2769 FLOGI to FCF (x%x) "
1162                                                 "completed successfully\n",
1163                                                 phba->fcf.current_rec.fcf_indx);
1164                         spin_lock_irq(&phba->hbalock);
1165                         phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1166                         spin_unlock_irq(&phba->hbalock);
1167                         clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1168                         clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag);
1169                         phba->fcf.fcf_redisc_attempted = 0; /* reset */
1170                         goto out;
1171                 }
1172         } else if (vport->port_state > LPFC_FLOGI &&
1173                    test_bit(FC_PT2PT, &vport->fc_flag)) {
1174                 /*
1175                  * In a p2p topology, it is possible that discovery has
1176                  * already progressed, and this completion can be ignored.
1177                  * Recheck the indicated topology.
1178                  */
1179                 if (!sp->cmn.fPort)
1180                         goto out;
1181         }
1182
1183 flogifail:
1184         spin_lock_irq(&phba->hbalock);
1185         phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1186         spin_unlock_irq(&phba->hbalock);
1187
1188         if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
1189                 /* FLOGI failed, so just use loop map to make discovery list */
1190                 lpfc_disc_list_loopmap(vport);
1191
1192                 /* Start discovery */
1193                 lpfc_disc_start(vport);
1194         } else if (((ulp_status != IOSTAT_LOCAL_REJECT) ||
1195                         (((ulp_word4 & IOERR_PARAM_MASK) !=
1196                          IOERR_SLI_ABORTED) &&
1197                         ((ulp_word4 & IOERR_PARAM_MASK) !=
1198                          IOERR_SLI_DOWN))) &&
1199                         (phba->link_state != LPFC_CLEAR_LA)) {
1200                 /* If FLOGI failed enable link interrupt. */
1201                 lpfc_issue_clear_la(phba, vport);
1202         }
1203 out:
1204         if (!flogi_in_retry)
1205                 clear_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag);
1206
1207         lpfc_els_free_iocb(phba, cmdiocb);
1208         lpfc_nlp_put(ndlp);
1209 }
1210
1211 /**
1212  * lpfc_cmpl_els_link_down - Completion callback function for ELS command
1213  *                           aborted during a link down
1214  * @phba: pointer to lpfc hba data structure.
1215  * @cmdiocb: pointer to lpfc command iocb data structure.
1216  * @rspiocb: pointer to lpfc response iocb data structure.
1217  *
1218  */
1219 static void
1220 lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1221                         struct lpfc_iocbq *rspiocb)
1222 {
1223         uint32_t *pcmd;
1224         uint32_t cmd;
1225         u32 ulp_status, ulp_word4;
1226
1227         pcmd = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
1228         cmd = *pcmd;
1229
1230         ulp_status = get_job_ulpstatus(phba, rspiocb);
1231         ulp_word4 = get_job_word4(phba, rspiocb);
1232
1233         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1234                         "6445 ELS completes after LINK_DOWN: "
1235                         " Status %x/%x cmd x%x flg x%x iotag x%x\n",
1236                         ulp_status, ulp_word4, cmd,
1237                         cmdiocb->cmd_flag, cmdiocb->iotag);
1238
1239         if (cmdiocb->cmd_flag & LPFC_IO_FABRIC) {
1240                 cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
1241                 atomic_dec(&phba->fabric_iocb_count);
1242         }
1243         lpfc_els_free_iocb(phba, cmdiocb);
1244 }
1245
1246 /**
1247  * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
1248  * @vport: pointer to a host virtual N_Port data structure.
1249  * @ndlp: pointer to a node-list data structure.
1250  * @retry: number of retries to the command IOCB.
1251  *
1252  * This routine issues a Fabric Login (FLOGI) Request ELS command
1253  * for a @vport. The initiator service parameters are put into the payload
1254  * of the FLOGI Request IOCB and the top-level callback function pointer
1255  * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
1256  * function field. The lpfc_issue_fabric_iocb routine is invoked to send
1257  * out FLOGI ELS command with one outstanding fabric IOCB at a time.
1258  *
1259  * Note that the ndlp reference count will be incremented by 1 for holding the
1260  * ndlp and the reference to ndlp will be stored into the ndlp field of
1261  * the IOCB for the completion callback function to the FLOGI ELS command.
1262  *
1263  * Return code
1264  *   0 - successfully issued flogi iocb for @vport
1265  *   1 - failed to issue flogi iocb for @vport
1266  **/
1267 static int
1268 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1269                      uint8_t retry)
1270 {
1271         struct lpfc_hba  *phba = vport->phba;
1272         struct serv_parm *sp;
1273         union lpfc_wqe128 *wqe = NULL;
1274         IOCB_t *icmd = NULL;
1275         struct lpfc_iocbq *elsiocb;
1276         struct lpfc_iocbq defer_flogi_acc;
1277         u8 *pcmd, ct;
1278         uint16_t cmdsize;
1279         uint32_t tmo, did;
1280         int rc;
1281
1282         cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1283         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1284                                      ndlp->nlp_DID, ELS_CMD_FLOGI);
1285
1286         if (!elsiocb)
1287                 return 1;
1288
1289         wqe = &elsiocb->wqe;
1290         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
1291         icmd = &elsiocb->iocb;
1292
1293         /* For FLOGI request, remainder of payload is service parameters */
1294         *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
1295         pcmd += sizeof(uint32_t);
1296         memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1297         sp = (struct serv_parm *) pcmd;
1298
1299         /* Setup CSPs accordingly for Fabric */
1300         sp->cmn.e_d_tov = 0;
1301         sp->cmn.w2.r_a_tov = 0;
1302         sp->cmn.virtual_fabric_support = 0;
1303         sp->cls1.classValid = 0;
1304         if (sp->cmn.fcphLow < FC_PH3)
1305                 sp->cmn.fcphLow = FC_PH3;
1306         if (sp->cmn.fcphHigh < FC_PH3)
1307                 sp->cmn.fcphHigh = FC_PH3;
1308
1309         /* Determine if switch supports priority tagging */
1310         if (phba->cfg_vmid_priority_tagging) {
1311                 sp->cmn.priority_tagging = 1;
1312                 /* lpfc_vmid_host_uuid is combination of wwpn and wwnn */
1313                 if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0,
1314                                 sizeof(vport->lpfc_vmid_host_uuid))) {
1315                         memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn,
1316                                sizeof(phba->wwpn));
1317                         memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn,
1318                                sizeof(phba->wwnn));
1319                 }
1320         }
1321
1322         if  (phba->sli_rev == LPFC_SLI_REV4) {
1323                 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
1324                     LPFC_SLI_INTF_IF_TYPE_0) {
1325                         /* FLOGI needs to be 3 for WQE FCFI */
1326                         ct = SLI4_CT_FCFI;
1327                         bf_set(wqe_ct, &wqe->els_req.wqe_com, ct);
1328
1329                         /* Set the fcfi to the fcfi we registered with */
1330                         bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
1331                                phba->fcf.fcfi);
1332                 }
1333
1334                 /* Can't do SLI4 class2 without support sequence coalescing */
1335                 sp->cls2.classValid = 0;
1336                 sp->cls2.seqDelivery = 0;
1337         } else {
1338                 /* Historical, setting sequential-delivery bit for SLI3 */
1339                 sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0;
1340                 sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0;
1341                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1342                         sp->cmn.request_multiple_Nport = 1;
1343                         /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
1344                         icmd->ulpCt_h = 1;
1345                         icmd->ulpCt_l = 0;
1346                 } else {
1347                         sp->cmn.request_multiple_Nport = 0;
1348                 }
1349
1350                 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
1351                         icmd->un.elsreq64.myID = 0;
1352                         icmd->un.elsreq64.fl = 1;
1353                 }
1354         }
1355
1356         tmo = phba->fc_ratov;
1357         phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
1358         lpfc_set_disctmo(vport);
1359         phba->fc_ratov = tmo;
1360
1361         phba->fc_stat.elsXmitFLOGI++;
1362         elsiocb->cmd_cmpl = lpfc_cmpl_els_flogi;
1363
1364         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1365                 "Issue FLOGI:     opt:x%x",
1366                 phba->sli3_options, 0, 0);
1367
1368         elsiocb->ndlp = lpfc_nlp_get(ndlp);
1369         if (!elsiocb->ndlp) {
1370                 lpfc_els_free_iocb(phba, elsiocb);
1371                 return 1;
1372         }
1373
1374         /* Avoid race with FLOGI completion and hba_flags. */
1375         set_bit(HBA_FLOGI_ISSUED, &phba->hba_flag);
1376         set_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag);
1377
1378         rc = lpfc_issue_fabric_iocb(phba, elsiocb);
1379         if (rc == IOCB_ERROR) {
1380                 clear_bit(HBA_FLOGI_ISSUED, &phba->hba_flag);
1381                 clear_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag);
1382                 lpfc_els_free_iocb(phba, elsiocb);
1383                 lpfc_nlp_put(ndlp);
1384                 return 1;
1385         }
1386
1387         /* Clear external loopback plug detected flag */
1388         phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1389
1390         /* Check for a deferred FLOGI ACC condition */
1391         if (phba->defer_flogi_acc.flag) {
1392                 /* lookup ndlp for received FLOGI */
1393                 ndlp = lpfc_findnode_did(vport, 0);
1394                 if (!ndlp)
1395                         return 0;
1396
1397                 did = vport->fc_myDID;
1398                 vport->fc_myDID = Fabric_DID;
1399
1400                 memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq));
1401
1402                 if (phba->sli_rev == LPFC_SLI_REV4) {
1403                         bf_set(wqe_ctxt_tag,
1404                                &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
1405                                phba->defer_flogi_acc.rx_id);
1406                         bf_set(wqe_rcvoxid,
1407                                &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
1408                                phba->defer_flogi_acc.ox_id);
1409                 } else {
1410                         icmd = &defer_flogi_acc.iocb;
1411                         icmd->ulpContext = phba->defer_flogi_acc.rx_id;
1412                         icmd->unsli3.rcvsli3.ox_id =
1413                                 phba->defer_flogi_acc.ox_id;
1414                 }
1415
1416                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1417                                  "3354 Xmit deferred FLOGI ACC: rx_id: x%x,"
1418                                  " ox_id: x%x, hba_flag x%lx\n",
1419                                  phba->defer_flogi_acc.rx_id,
1420                                  phba->defer_flogi_acc.ox_id, phba->hba_flag);
1421
1422                 /* Send deferred FLOGI ACC */
1423                 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc,
1424                                  ndlp, NULL);
1425
1426                 phba->defer_flogi_acc.flag = false;
1427
1428                 /* Decrement the held ndlp that was incremented when the
1429                  * deferred flogi acc flag was set.
1430                  */
1431                 if (phba->defer_flogi_acc.ndlp) {
1432                         lpfc_nlp_put(phba->defer_flogi_acc.ndlp);
1433                         phba->defer_flogi_acc.ndlp = NULL;
1434                 }
1435
1436                 vport->fc_myDID = did;
1437         }
1438
1439         return 0;
1440 }
1441
1442 /**
1443  * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1444  * @phba: pointer to lpfc hba data structure.
1445  *
1446  * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
1447  * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
1448  * list and issues an abort IOCB commond on each outstanding IOCB that
1449  * contains a active Fabric_DID ndlp. Note that this function is to issue
1450  * the abort IOCB command on all the outstanding IOCBs, thus when this
1451  * function returns, it does not guarantee all the IOCBs are actually aborted.
1452  *
1453  * Return code
1454  *   0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1455  **/
1456 int
1457 lpfc_els_abort_flogi(struct lpfc_hba *phba)
1458 {
1459         struct lpfc_sli_ring *pring;
1460         struct lpfc_iocbq *iocb, *next_iocb;
1461         struct lpfc_nodelist *ndlp;
1462         u32 ulp_command;
1463
1464         /* Abort outstanding I/O on NPort <nlp_DID> */
1465         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1466                         "0201 Abort outstanding I/O on NPort x%x\n",
1467                         Fabric_DID);
1468
1469         pring = lpfc_phba_elsring(phba);
1470         if (unlikely(!pring))
1471                 return -EIO;
1472
1473         /*
1474          * Check the txcmplq for an iocb that matches the nport the driver is
1475          * searching for.
1476          */
1477         spin_lock_irq(&phba->hbalock);
1478         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1479                 ulp_command = get_job_cmnd(phba, iocb);
1480                 if (ulp_command == CMD_ELS_REQUEST64_CR) {
1481                         ndlp = iocb->ndlp;
1482                         if (ndlp && ndlp->nlp_DID == Fabric_DID) {
1483                                 if (test_bit(FC_PT2PT, &phba->pport->fc_flag) &&
1484                                     !test_bit(FC_PT2PT_PLOGI,
1485                                               &phba->pport->fc_flag))
1486                                         iocb->fabric_cmd_cmpl =
1487                                                 lpfc_ignore_els_cmpl;
1488                                 lpfc_sli_issue_abort_iotag(phba, pring, iocb,
1489                                                            NULL);
1490                         }
1491                 }
1492         }
1493         /* Make sure HBA is alive */
1494         lpfc_issue_hb_tmo(phba);
1495
1496         spin_unlock_irq(&phba->hbalock);
1497
1498         return 0;
1499 }
1500
1501 /**
1502  * lpfc_initial_flogi - Issue an initial fabric login for a vport
1503  * @vport: pointer to a host virtual N_Port data structure.
1504  *
1505  * This routine issues an initial Fabric Login (FLOGI) for the @vport
1506  * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1507  * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1508  * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1509  * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1510  * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1511  * @vport.
1512  *
1513  * Return code
1514  *   0 - failed to issue initial flogi for @vport
1515  *   1 - successfully issued initial flogi for @vport
1516  **/
1517 int
1518 lpfc_initial_flogi(struct lpfc_vport *vport)
1519 {
1520         struct lpfc_nodelist *ndlp;
1521
1522         vport->port_state = LPFC_FLOGI;
1523         lpfc_set_disctmo(vport);
1524
1525         /* First look for the Fabric ndlp */
1526         ndlp = lpfc_findnode_did(vport, Fabric_DID);
1527         if (!ndlp) {
1528                 /* Cannot find existing Fabric ndlp, so allocate a new one */
1529                 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1530                 if (!ndlp)
1531                         return 0;
1532                 /* Set the node type */
1533                 ndlp->nlp_type |= NLP_FABRIC;
1534
1535                 /* Put ndlp onto node list */
1536                 lpfc_enqueue_node(vport, ndlp);
1537         }
1538
1539         /* Reset the Fabric flag, topology change may have happened */
1540         clear_bit(FC_FABRIC, &vport->fc_flag);
1541         if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
1542                 /* A node reference should be retained while registered with a
1543                  * transport or dev-loss-evt work is pending.
1544                  * Otherwise, decrement node reference to trigger release.
1545                  */
1546                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
1547                     !test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
1548                         lpfc_nlp_put(ndlp);
1549                 return 0;
1550         }
1551         return 1;
1552 }
1553
1554 /**
1555  * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1556  * @vport: pointer to a host virtual N_Port data structure.
1557  *
1558  * This routine issues an initial Fabric Discover (FDISC) for the @vport
1559  * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1560  * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1561  * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1562  * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1563  * is then invoked with the @vport and the ndlp to perform the FDISC for the
1564  * @vport.
1565  *
1566  * Return code
1567  *   0 - failed to issue initial fdisc for @vport
1568  *   1 - successfully issued initial fdisc for @vport
1569  **/
1570 int
1571 lpfc_initial_fdisc(struct lpfc_vport *vport)
1572 {
1573         struct lpfc_nodelist *ndlp;
1574
1575         /* First look for the Fabric ndlp */
1576         ndlp = lpfc_findnode_did(vport, Fabric_DID);
1577         if (!ndlp) {
1578                 /* Cannot find existing Fabric ndlp, so allocate a new one */
1579                 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1580                 if (!ndlp)
1581                         return 0;
1582
1583                 /* NPIV is only supported in Fabrics. */
1584                 ndlp->nlp_type |= NLP_FABRIC;
1585
1586                 /* Put ndlp onto node list */
1587                 lpfc_enqueue_node(vport, ndlp);
1588         }
1589
1590         if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1591                 /* A node reference should be retained while registered with a
1592                  * transport or dev-loss-evt work is pending.
1593                  * Otherwise, decrement node reference to trigger release.
1594                  */
1595                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
1596                     !test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
1597                         lpfc_nlp_put(ndlp);
1598                 return 0;
1599         }
1600         return 1;
1601 }
1602
1603 /**
1604  * lpfc_more_plogi - Check and issue remaining plogis for a vport
1605  * @vport: pointer to a host virtual N_Port data structure.
1606  *
1607  * This routine checks whether there are more remaining Port Logins
1608  * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1609  * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1610  * to issue ELS PLOGIs up to the configured discover threads with the
1611  * @vport (@vport->cfg_discovery_threads). The function also decrement
1612  * the @vport's num_disc_node by 1 if it is not already 0.
1613  **/
1614 void
1615 lpfc_more_plogi(struct lpfc_vport *vport)
1616 {
1617         if (vport->num_disc_nodes)
1618                 vport->num_disc_nodes--;
1619
1620         /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1621         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1622                          "0232 Continue discovery with %d PLOGIs to go "
1623                          "Data: x%x x%lx x%x\n",
1624                          vport->num_disc_nodes,
1625                          atomic_read(&vport->fc_plogi_cnt),
1626                          vport->fc_flag, vport->port_state);
1627         /* Check to see if there are more PLOGIs to be sent */
1628         if (test_bit(FC_NLP_MORE, &vport->fc_flag))
1629                 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1630                 lpfc_els_disc_plogi(vport);
1631
1632         return;
1633 }
1634
1635 /**
1636  * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp
1637  * @phba: pointer to lpfc hba data structure.
1638  * @prsp: pointer to response IOCB payload.
1639  * @ndlp: pointer to a node-list data structure.
1640  *
1641  * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1642  * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1643  * The following cases are considered N_Port confirmed:
1644  * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1645  * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1646  * it does not have WWPN assigned either. If the WWPN is confirmed, the
1647  * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1648  * 1) if there is a node on vport list other than the @ndlp with the same
1649  * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1650  * on that node to release the RPI associated with the node; 2) if there is
1651  * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1652  * into, a new node shall be allocated (or activated). In either case, the
1653  * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1654  * be released and the new_ndlp shall be put on to the vport node list and
1655  * its pointer returned as the confirmed node.
1656  *
1657  * Note that before the @ndlp got "released", the keepDID from not-matching
1658  * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1659  * of the @ndlp. This is because the release of @ndlp is actually to put it
1660  * into an inactive state on the vport node list and the vport node list
1661  * management algorithm does not allow two node with a same DID.
1662  *
1663  * Return code
1664  *   pointer to the PLOGI N_Port @ndlp
1665  **/
1666 static struct lpfc_nodelist *
1667 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1668                          struct lpfc_nodelist *ndlp)
1669 {
1670         struct lpfc_vport *vport = ndlp->vport;
1671         struct lpfc_nodelist *new_ndlp;
1672         struct serv_parm *sp;
1673         uint8_t  name[sizeof(struct lpfc_name)];
1674         uint32_t keepDID = 0;
1675         int rc;
1676         unsigned long keep_nlp_flag = 0, keep_new_nlp_flag = 0;
1677         uint16_t keep_nlp_state;
1678         u32 keep_nlp_fc4_type = 0;
1679         struct lpfc_nvme_rport *keep_nrport = NULL;
1680         unsigned long *active_rrqs_xri_bitmap = NULL;
1681
1682         sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1683         memset(name, 0, sizeof(struct lpfc_name));
1684
1685         /* Now we find out if the NPort we are logging into, matches the WWPN
1686          * we have for that ndlp. If not, we have some work to do.
1687          */
1688         new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1689
1690         /* return immediately if the WWPN matches ndlp */
1691         if (new_ndlp == ndlp)
1692                 return ndlp;
1693
1694         if (phba->sli_rev == LPFC_SLI_REV4) {
1695                 active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
1696                                                        GFP_KERNEL);
1697                 if (active_rrqs_xri_bitmap)
1698                         memset(active_rrqs_xri_bitmap, 0,
1699                                phba->cfg_rrq_xri_bitmap_sz);
1700         }
1701
1702         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1703                          "3178 PLOGI confirm: ndlp x%x x%lx x%x: "
1704                          "new_ndlp x%x x%lx x%x\n",
1705                          ndlp->nlp_DID, ndlp->nlp_flag,  ndlp->nlp_fc4_type,
1706                          (new_ndlp ? new_ndlp->nlp_DID : 0),
1707                          (new_ndlp ? new_ndlp->nlp_flag : 0),
1708                          (new_ndlp ? new_ndlp->nlp_fc4_type : 0));
1709
1710         if (!new_ndlp) {
1711                 rc = memcmp(&ndlp->nlp_portname, name,
1712                             sizeof(struct lpfc_name));
1713                 if (!rc) {
1714                         if (active_rrqs_xri_bitmap)
1715                                 mempool_free(active_rrqs_xri_bitmap,
1716                                              phba->active_rrq_pool);
1717                         return ndlp;
1718                 }
1719                 new_ndlp = lpfc_nlp_init(vport, ndlp->nlp_DID);
1720                 if (!new_ndlp) {
1721                         if (active_rrqs_xri_bitmap)
1722                                 mempool_free(active_rrqs_xri_bitmap,
1723                                              phba->active_rrq_pool);
1724                         return ndlp;
1725                 }
1726         } else {
1727                 if (phba->sli_rev == LPFC_SLI_REV4 &&
1728                     active_rrqs_xri_bitmap)
1729                         memcpy(active_rrqs_xri_bitmap,
1730                                new_ndlp->active_rrqs_xri_bitmap,
1731                                phba->cfg_rrq_xri_bitmap_sz);
1732
1733                 /*
1734                  * Unregister from backend if not done yet. Could have been
1735                  * skipped due to ADISC
1736                  */
1737                 lpfc_nlp_unreg_node(vport, new_ndlp);
1738         }
1739
1740         keepDID = new_ndlp->nlp_DID;
1741
1742         /* At this point in this routine, we know new_ndlp will be
1743          * returned. however, any previous GID_FTs that were done
1744          * would have updated nlp_fc4_type in ndlp, so we must ensure
1745          * new_ndlp has the right value.
1746          */
1747         if (test_bit(FC_FABRIC, &vport->fc_flag)) {
1748                 keep_nlp_fc4_type = new_ndlp->nlp_fc4_type;
1749                 new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type;
1750         }
1751
1752         lpfc_unreg_rpi(vport, new_ndlp);
1753         new_ndlp->nlp_DID = ndlp->nlp_DID;
1754         new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1755         if (phba->sli_rev == LPFC_SLI_REV4)
1756                 memcpy(new_ndlp->active_rrqs_xri_bitmap,
1757                        ndlp->active_rrqs_xri_bitmap,
1758                        phba->cfg_rrq_xri_bitmap_sz);
1759
1760         /* Lock both ndlps */
1761         spin_lock_irq(&ndlp->lock);
1762         spin_lock_irq(&new_ndlp->lock);
1763         keep_new_nlp_flag = new_ndlp->nlp_flag;
1764         keep_nlp_flag = ndlp->nlp_flag;
1765         new_ndlp->nlp_flag = ndlp->nlp_flag;
1766
1767         /* if new_ndlp had NLP_UNREG_INP set, keep it */
1768         if (test_bit(NLP_UNREG_INP, &keep_new_nlp_flag))
1769                 set_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag);
1770         else
1771                 clear_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag);
1772
1773         /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */
1774         if (test_bit(NLP_RPI_REGISTERED, &keep_new_nlp_flag))
1775                 set_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag);
1776         else
1777                 clear_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag);
1778
1779         /*
1780          * Retain the DROPPED flag. This will take care of the init
1781          * refcount when affecting the state change
1782          */
1783         if (test_bit(NLP_DROPPED, &keep_new_nlp_flag))
1784                 set_bit(NLP_DROPPED, &new_ndlp->nlp_flag);
1785         else
1786                 clear_bit(NLP_DROPPED, &new_ndlp->nlp_flag);
1787
1788         ndlp->nlp_flag = keep_new_nlp_flag;
1789
1790         /* if ndlp had NLP_UNREG_INP set, keep it */
1791         if (test_bit(NLP_UNREG_INP, &keep_nlp_flag))
1792                 set_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
1793         else
1794                 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
1795
1796         /* if ndlp had NLP_RPI_REGISTERED set, keep it */
1797         if (test_bit(NLP_RPI_REGISTERED, &keep_nlp_flag))
1798                 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
1799         else
1800                 clear_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
1801
1802         /*
1803          * Retain the DROPPED flag. This will take care of the init
1804          * refcount when affecting the state change
1805          */
1806         if (test_bit(NLP_DROPPED, &keep_nlp_flag))
1807                 set_bit(NLP_DROPPED, &ndlp->nlp_flag);
1808         else
1809                 clear_bit(NLP_DROPPED, &ndlp->nlp_flag);
1810
1811         spin_unlock_irq(&new_ndlp->lock);
1812         spin_unlock_irq(&ndlp->lock);
1813
1814         /* Set nlp_states accordingly */
1815         keep_nlp_state = new_ndlp->nlp_state;
1816         lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1817
1818         /* interchange the nvme remoteport structs */
1819         keep_nrport = new_ndlp->nrport;
1820         new_ndlp->nrport = ndlp->nrport;
1821
1822         /* Move this back to NPR state */
1823         if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1824                 /* The ndlp doesn't have a portname yet, but does have an
1825                  * NPort ID.  The new_ndlp portname matches the Rport's
1826                  * portname.  Reinstantiate the new_ndlp and reset the ndlp.
1827                  */
1828                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1829                          "3179 PLOGI confirm NEW: %x %x\n",
1830                          new_ndlp->nlp_DID, keepDID);
1831
1832                 /* Two ndlps cannot have the same did on the nodelist.
1833                  * The KeepDID and keep_nlp_fc4_type need to be swapped
1834                  * because ndlp is inflight with no WWPN.
1835                  */
1836                 ndlp->nlp_DID = keepDID;
1837                 ndlp->nlp_fc4_type = keep_nlp_fc4_type;
1838                 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1839                 if (phba->sli_rev == LPFC_SLI_REV4 &&
1840                     active_rrqs_xri_bitmap)
1841                         memcpy(ndlp->active_rrqs_xri_bitmap,
1842                                active_rrqs_xri_bitmap,
1843                                phba->cfg_rrq_xri_bitmap_sz);
1844
1845         } else {
1846                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1847                          "3180 PLOGI confirm SWAP: %x %x\n",
1848                          new_ndlp->nlp_DID, keepDID);
1849
1850                 lpfc_unreg_rpi(vport, ndlp);
1851
1852                 /* The ndlp and new_ndlp both have WWPNs but are swapping
1853                  * NPort Ids and attributes.
1854                  */
1855                 ndlp->nlp_DID = keepDID;
1856                 ndlp->nlp_fc4_type = keep_nlp_fc4_type;
1857
1858                 if (phba->sli_rev == LPFC_SLI_REV4 &&
1859                     active_rrqs_xri_bitmap)
1860                         memcpy(ndlp->active_rrqs_xri_bitmap,
1861                                active_rrqs_xri_bitmap,
1862                                phba->cfg_rrq_xri_bitmap_sz);
1863
1864                 /* Since we are switching over to the new_ndlp,
1865                  * reset the old ndlp state
1866                  */
1867                 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
1868                     (ndlp->nlp_state == NLP_STE_MAPPED_NODE))
1869                         keep_nlp_state = NLP_STE_NPR_NODE;
1870                 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1871                 ndlp->nrport = keep_nrport;
1872         }
1873
1874         /*
1875          * If ndlp is not associated with any rport we can drop it here else
1876          * let dev_loss_tmo_callbk trigger DEVICE_RM event
1877          */
1878         if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE))
1879                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
1880
1881         if (phba->sli_rev == LPFC_SLI_REV4 &&
1882             active_rrqs_xri_bitmap)
1883                 mempool_free(active_rrqs_xri_bitmap,
1884                              phba->active_rrq_pool);
1885
1886         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1887                          "3173 PLOGI confirm exit: new_ndlp x%x x%lx x%x\n",
1888                          new_ndlp->nlp_DID, new_ndlp->nlp_flag,
1889                          new_ndlp->nlp_fc4_type);
1890
1891         return new_ndlp;
1892 }
1893
1894 /**
1895  * lpfc_end_rscn - Check and handle more rscn for a vport
1896  * @vport: pointer to a host virtual N_Port data structure.
1897  *
1898  * This routine checks whether more Registration State Change
1899  * Notifications (RSCNs) came in while the discovery state machine was in
1900  * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1901  * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1902  * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1903  * handling the RSCNs.
1904  **/
1905 void
1906 lpfc_end_rscn(struct lpfc_vport *vport)
1907 {
1908
1909         if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) {
1910                 /*
1911                  * Check to see if more RSCNs came in while we were
1912                  * processing this one.
1913                  */
1914                 if (vport->fc_rscn_id_cnt ||
1915                     test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag))
1916                         lpfc_els_handle_rscn(vport);
1917                 else
1918                         clear_bit(FC_RSCN_MODE, &vport->fc_flag);
1919         }
1920 }
1921
1922 /**
1923  * lpfc_cmpl_els_rrq - Completion handled for els RRQs.
1924  * @phba: pointer to lpfc hba data structure.
1925  * @cmdiocb: pointer to lpfc command iocb data structure.
1926  * @rspiocb: pointer to lpfc response iocb data structure.
1927  *
1928  * This routine will call the clear rrq function to free the rrq and
1929  * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
1930  * exist then the clear_rrq is still called because the rrq needs to
1931  * be freed.
1932  **/
1933
1934 static void
1935 lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1936                   struct lpfc_iocbq *rspiocb)
1937 {
1938         struct lpfc_vport *vport = cmdiocb->vport;
1939         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
1940         struct lpfc_node_rrq *rrq;
1941         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
1942         u32 ulp_word4 = get_job_word4(phba, rspiocb);
1943
1944         /* we pass cmdiocb to state machine which needs rspiocb as well */
1945         rrq = cmdiocb->context_un.rrq;
1946         cmdiocb->rsp_iocb = rspiocb;
1947
1948         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1949                 "RRQ cmpl:      status:x%x/x%x did:x%x",
1950                 ulp_status, ulp_word4,
1951                 get_job_els_rsp64_did(phba, cmdiocb));
1952
1953
1954         /* rrq completes to NPort <nlp_DID> */
1955         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1956                          "2880 RRQ completes to DID x%x "
1957                          "Data: x%x x%x x%x x%x x%x\n",
1958                          ndlp->nlp_DID, ulp_status, ulp_word4,
1959                          get_wqe_tmo(cmdiocb), rrq->xritag, rrq->rxid);
1960
1961         if (ulp_status) {
1962                 /* Check for retry */
1963                 /* Warn RRQ status Don't print the vport to vport rjts */
1964                 if (ulp_status != IOSTAT_LS_RJT ||
1965                     (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
1966                      ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
1967                     (phba)->pport->cfg_log_verbose & LOG_ELS)
1968                         lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
1969                                       "2881 RRQ DID:%06X Status:"
1970                                       "x%x/x%x\n",
1971                                       ndlp->nlp_DID, ulp_status,
1972                                       ulp_word4);
1973         }
1974
1975         lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
1976         lpfc_els_free_iocb(phba, cmdiocb);
1977         lpfc_nlp_put(ndlp);
1978         return;
1979 }
1980 /**
1981  * lpfc_cmpl_els_plogi - Completion callback function for plogi
1982  * @phba: pointer to lpfc hba data structure.
1983  * @cmdiocb: pointer to lpfc command iocb data structure.
1984  * @rspiocb: pointer to lpfc response iocb data structure.
1985  *
1986  * This routine is the completion callback function for issuing the Port
1987  * Login (PLOGI) command. For PLOGI completion, there must be an active
1988  * ndlp on the vport node list that matches the remote node ID from the
1989  * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply
1990  * ignored and command IOCB released. The PLOGI response IOCB status is
1991  * checked for error conditions. If there is error status reported, PLOGI
1992  * retry shall be attempted by invoking the lpfc_els_retry() routine.
1993  * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1994  * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1995  * (DSM) is set for this PLOGI completion. Finally, it checks whether
1996  * there are additional N_Port nodes with the vport that need to perform
1997  * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1998  * PLOGIs.
1999  **/
2000 static void
2001 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2002                     struct lpfc_iocbq *rspiocb)
2003 {
2004         struct lpfc_vport *vport = cmdiocb->vport;
2005         IOCB_t *irsp;
2006         struct lpfc_nodelist *ndlp, *free_ndlp;
2007         struct lpfc_dmabuf *prsp;
2008         bool disc;
2009         struct serv_parm *sp = NULL;
2010         u32 ulp_status, ulp_word4, did, iotag;
2011         bool release_node = false;
2012
2013         /* we pass cmdiocb to state machine which needs rspiocb as well */
2014         cmdiocb->rsp_iocb = rspiocb;
2015
2016         ulp_status = get_job_ulpstatus(phba, rspiocb);
2017         ulp_word4 = get_job_word4(phba, rspiocb);
2018         did = get_job_els_rsp64_did(phba, cmdiocb);
2019
2020         if (phba->sli_rev == LPFC_SLI_REV4) {
2021                 iotag = get_wqe_reqtag(cmdiocb);
2022         } else {
2023                 irsp = &rspiocb->iocb;
2024                 iotag = irsp->ulpIoTag;
2025         }
2026
2027         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2028                 "PLOGI cmpl:      status:x%x/x%x did:x%x",
2029                 ulp_status, ulp_word4, did);
2030
2031         ndlp = lpfc_findnode_did(vport, did);
2032         if (!ndlp) {
2033                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2034                                  "0136 PLOGI completes to NPort x%x "
2035                                  "with no ndlp. Data: x%x x%x x%x\n",
2036                                  did, ulp_status, ulp_word4, iotag);
2037                 goto out_freeiocb;
2038         }
2039
2040         /* Since ndlp can be freed in the disc state machine, note if this node
2041          * is being used during discovery.
2042          */
2043         disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2044
2045         /* PLOGI completes to NPort <nlp_DID> */
2046         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2047                          "0102 PLOGI completes to NPort x%06x "
2048                          "IoTag x%x Data: x%x x%x x%x x%x x%x\n",
2049                          ndlp->nlp_DID, iotag,
2050                          ndlp->nlp_fc4_type,
2051                          ulp_status, ulp_word4,
2052                          disc, vport->num_disc_nodes);
2053
2054         /* Check to see if link went down during discovery */
2055         if (lpfc_els_chk_latt(vport)) {
2056                 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2057                 goto out;
2058         }
2059
2060         if (ulp_status) {
2061                 /* Check for retry */
2062                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2063                         /* ELS command is being retried */
2064                         if (disc)
2065                                 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2066                         goto out;
2067                 }
2068                 /* Warn PLOGI status Don't print the vport to vport rjts */
2069                 if (ulp_status != IOSTAT_LS_RJT ||
2070                     (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
2071                      ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
2072                     (phba)->pport->cfg_log_verbose & LOG_ELS)
2073                         lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
2074                                       "2753 PLOGI DID:%06X "
2075                                       "Status:x%x/x%x\n",
2076                                       ndlp->nlp_DID, ulp_status,
2077                                       ulp_word4);
2078
2079                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2080                 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
2081                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2082                                                 NLP_EVT_CMPL_PLOGI);
2083
2084                 /* If a PLOGI collision occurred, the node needs to continue
2085                  * with the reglogin process.
2086                  */
2087                 spin_lock_irq(&ndlp->lock);
2088                 if ((test_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag) ||
2089                      test_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag)) &&
2090                     ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
2091                         spin_unlock_irq(&ndlp->lock);
2092                         goto out;
2093                 }
2094
2095                 /* No PLOGI collision and the node is not registered with the
2096                  * scsi or nvme transport. It is no longer an active node. Just
2097                  * start the device remove process.
2098                  */
2099                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2100                         clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2101                         if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
2102                                 release_node = true;
2103                 }
2104                 spin_unlock_irq(&ndlp->lock);
2105
2106                 if (release_node)
2107                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2108                                                 NLP_EVT_DEVICE_RM);
2109         } else {
2110                 /* Good status, call state machine */
2111                 prsp = list_get_first(&cmdiocb->cmd_dmabuf->list,
2112                                       struct lpfc_dmabuf, list);
2113                 if (!prsp)
2114                         goto out;
2115                 if (!lpfc_is_els_acc_rsp(prsp))
2116                         goto out;
2117                 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
2118
2119                 sp = (struct serv_parm *)((u8 *)prsp->virt +
2120                                           sizeof(u32));
2121
2122                 ndlp->vmid_support = 0;
2123                 if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) ||
2124                     (phba->cfg_vmid_priority_tagging &&
2125                      sp->cmn.priority_tagging)) {
2126                         lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS,
2127                                         "4018 app_hdr_support %d tagging %d DID x%x\n",
2128                                         sp->cmn.app_hdr_support,
2129                                         sp->cmn.priority_tagging,
2130                                         ndlp->nlp_DID);
2131                         /* if the dest port supports VMID, mark it in ndlp */
2132                         ndlp->vmid_support = 1;
2133                 }
2134
2135                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2136                                         NLP_EVT_CMPL_PLOGI);
2137         }
2138
2139         if (disc && vport->num_disc_nodes) {
2140                 /* Check to see if there are more PLOGIs to be sent */
2141                 lpfc_more_plogi(vport);
2142
2143                 if (vport->num_disc_nodes == 0) {
2144                         clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
2145
2146                         lpfc_can_disctmo(vport);
2147                         lpfc_end_rscn(vport);
2148                 }
2149         }
2150
2151 out:
2152         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2153                               "PLOGI Cmpl PUT:     did:x%x refcnt %d",
2154                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2155
2156 out_freeiocb:
2157         /* Release the reference on the original I/O request. */
2158         free_ndlp = cmdiocb->ndlp;
2159
2160         lpfc_els_free_iocb(phba, cmdiocb);
2161         lpfc_nlp_put(free_ndlp);
2162         return;
2163 }
2164
2165 /**
2166  * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
2167  * @vport: pointer to a host virtual N_Port data structure.
2168  * @did: destination port identifier.
2169  * @retry: number of retries to the command IOCB.
2170  *
2171  * This routine issues a Port Login (PLOGI) command to a remote N_Port
2172  * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
2173  * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
2174  * This routine constructs the proper fields of the PLOGI IOCB and invokes
2175  * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
2176  *
2177  * Note that the ndlp reference count will be incremented by 1 for holding
2178  * the ndlp and the reference to ndlp will be stored into the ndlp field
2179  * of the IOCB for the completion callback function to the PLOGI ELS command.
2180  *
2181  * Return code
2182  *   0 - Successfully issued a plogi for @vport
2183  *   1 - failed to issue a plogi for @vport
2184  **/
2185 int
2186 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
2187 {
2188         struct lpfc_hba  *phba = vport->phba;
2189         struct serv_parm *sp;
2190         struct lpfc_nodelist *ndlp;
2191         struct lpfc_iocbq *elsiocb;
2192         uint8_t *pcmd;
2193         uint16_t cmdsize;
2194         int ret;
2195
2196         ndlp = lpfc_findnode_did(vport, did);
2197         if (!ndlp)
2198                 return 1;
2199
2200         /* Defer the processing of the issue PLOGI until after the
2201          * outstanding UNREG_RPI mbox command completes, unless we
2202          * are going offline. This logic does not apply for Fabric DIDs
2203          */
2204         if ((test_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag) ||
2205              test_bit(NLP_UNREG_INP, &ndlp->nlp_flag)) &&
2206             ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
2207             !test_bit(FC_OFFLINE_MODE, &vport->fc_flag)) {
2208                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2209                                  "4110 Issue PLOGI x%x deferred "
2210                                  "on NPort x%x rpi x%x flg x%lx Data:"
2211                                  " x%px\n",
2212                                  ndlp->nlp_defer_did, ndlp->nlp_DID,
2213                                  ndlp->nlp_rpi, ndlp->nlp_flag, ndlp);
2214
2215                 /* We can only defer 1st PLOGI */
2216                 if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING)
2217                         ndlp->nlp_defer_did = did;
2218                 return 0;
2219         }
2220
2221         cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
2222         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
2223                                      ELS_CMD_PLOGI);
2224         if (!elsiocb)
2225                 return 1;
2226
2227         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2228
2229         /* For PLOGI request, remainder of payload is service parameters */
2230         *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
2231         pcmd += sizeof(uint32_t);
2232         memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
2233         sp = (struct serv_parm *) pcmd;
2234
2235         /*
2236          * If we are a N-port connected to a Fabric, fix-up paramm's so logins
2237          * to device on remote loops work.
2238          */
2239         if (test_bit(FC_FABRIC, &vport->fc_flag) &&
2240             !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))
2241                 sp->cmn.altBbCredit = 1;
2242
2243         if (sp->cmn.fcphLow < FC_PH_4_3)
2244                 sp->cmn.fcphLow = FC_PH_4_3;
2245
2246         if (sp->cmn.fcphHigh < FC_PH3)
2247                 sp->cmn.fcphHigh = FC_PH3;
2248
2249         sp->cmn.valid_vendor_ver_level = 0;
2250         memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
2251         sp->cmn.bbRcvSizeMsb &= 0xF;
2252
2253         /* Check if the destination port supports VMID */
2254         ndlp->vmid_support = 0;
2255         if (vport->vmid_priority_tagging)
2256                 sp->cmn.priority_tagging = 1;
2257         else if (phba->cfg_vmid_app_header &&
2258                  bf_get(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags))
2259                 sp->cmn.app_hdr_support = 1;
2260
2261         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2262                 "Issue PLOGI:     did:x%x",
2263                 did, 0, 0);
2264
2265         /* If our firmware supports this feature, convey that
2266          * information to the target using the vendor specific field.
2267          */
2268         if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
2269                 sp->cmn.valid_vendor_ver_level = 1;
2270                 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
2271                 sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
2272         }
2273
2274         phba->fc_stat.elsXmitPLOGI++;
2275         elsiocb->cmd_cmpl = lpfc_cmpl_els_plogi;
2276
2277         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2278                               "Issue PLOGI:     did:x%x refcnt %d",
2279                               did, kref_read(&ndlp->kref), 0);
2280         elsiocb->ndlp = lpfc_nlp_get(ndlp);
2281         if (!elsiocb->ndlp) {
2282                 lpfc_els_free_iocb(phba, elsiocb);
2283                 return 1;
2284         }
2285
2286         ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2287         if (ret) {
2288                 lpfc_els_free_iocb(phba, elsiocb);
2289                 lpfc_nlp_put(ndlp);
2290                 return 1;
2291         }
2292
2293         return 0;
2294 }
2295
2296 /**
2297  * lpfc_cmpl_els_prli - Completion callback function for prli
2298  * @phba: pointer to lpfc hba data structure.
2299  * @cmdiocb: pointer to lpfc command iocb data structure.
2300  * @rspiocb: pointer to lpfc response iocb data structure.
2301  *
2302  * This routine is the completion callback function for a Process Login
2303  * (PRLI) ELS command. The PRLI response IOCB status is checked for error
2304  * status. If there is error status reported, PRLI retry shall be attempted
2305  * by invoking the lpfc_els_retry() routine. Otherwise, the state
2306  * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
2307  * ndlp to mark the PRLI completion.
2308  **/
2309 static void
2310 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2311                    struct lpfc_iocbq *rspiocb)
2312 {
2313         struct lpfc_vport *vport = cmdiocb->vport;
2314         struct lpfc_nodelist *ndlp;
2315         char *mode;
2316         u32 ulp_status;
2317         u32 ulp_word4;
2318         bool release_node = false;
2319
2320         /* we pass cmdiocb to state machine which needs rspiocb as well */
2321         cmdiocb->rsp_iocb = rspiocb;
2322
2323         ndlp = cmdiocb->ndlp;
2324
2325         ulp_status = get_job_ulpstatus(phba, rspiocb);
2326         ulp_word4 = get_job_word4(phba, rspiocb);
2327
2328         clear_bit(NLP_PRLI_SND, &ndlp->nlp_flag);
2329
2330         /* Driver supports multiple FC4 types.  Counters matter. */
2331         spin_lock_irq(&ndlp->lock);
2332         vport->fc_prli_sent--;
2333         ndlp->fc4_prli_sent--;
2334         spin_unlock_irq(&ndlp->lock);
2335
2336         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2337                 "PRLI cmpl:       status:x%x/x%x did:x%x",
2338                 ulp_status, ulp_word4,
2339                 ndlp->nlp_DID);
2340
2341         /* PRLI completes to NPort <nlp_DID> */
2342         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2343                          "0103 PRLI completes to NPort x%06x "
2344                          "Data: x%x x%x x%x x%x x%x\n",
2345                          ndlp->nlp_DID, ulp_status, ulp_word4,
2346                          vport->num_disc_nodes, ndlp->fc4_prli_sent,
2347                          ndlp->fc4_xpt_flags);
2348
2349         /* Check to see if link went down during discovery */
2350         if (lpfc_els_chk_latt(vport))
2351                 goto out;
2352
2353         if (ulp_status) {
2354                 /* Check for retry */
2355                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2356                         /* ELS command is being retried */
2357                         goto out;
2358                 }
2359
2360                 /* If we don't send GFT_ID to Fabric, a PRLI error
2361                  * could be expected.
2362                  */
2363                 if (test_bit(FC_FABRIC, &vport->fc_flag) ||
2364                     vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)
2365                         mode = KERN_WARNING;
2366                 else
2367                         mode = KERN_INFO;
2368
2369                 /* Warn PRLI status */
2370                 lpfc_printf_vlog(vport, mode, LOG_ELS,
2371                                  "2754 PRLI DID:%06X Status:x%x/x%x, "
2372                                  "data: x%x x%x x%lx\n",
2373                                  ndlp->nlp_DID, ulp_status,
2374                                  ulp_word4, ndlp->nlp_state,
2375                                  ndlp->fc4_prli_sent, ndlp->nlp_flag);
2376
2377                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2378                 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
2379                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2380                                                 NLP_EVT_CMPL_PRLI);
2381
2382                 /* The following condition catches an inflight transition
2383                  * mismatch typically caused by an RSCN. Skip any
2384                  * processing to allow recovery.
2385                  */
2386                 if ((ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
2387                      ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) ||
2388                     (ndlp->nlp_state == NLP_STE_NPR_NODE &&
2389                      test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag))) {
2390                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2391                                          "2784 PRLI cmpl: Allow Node recovery "
2392                                          "DID x%06x nstate x%x nflag x%lx\n",
2393                                          ndlp->nlp_DID, ndlp->nlp_state,
2394                                          ndlp->nlp_flag);
2395                         goto out;
2396                 }
2397
2398                 /*
2399                  * For P2P topology, retain the node so that PLOGI can be
2400                  * attempted on it again.
2401                  */
2402                 if (test_bit(FC_PT2PT, &vport->fc_flag))
2403                         goto out;
2404
2405                 /* As long as this node is not registered with the SCSI
2406                  * or NVMe transport and no other PRLIs are outstanding,
2407                  * it is no longer an active node.  Otherwise devloss
2408                  * handles the final cleanup.
2409                  */
2410                 spin_lock_irq(&ndlp->lock);
2411                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
2412                     !ndlp->fc4_prli_sent) {
2413                         clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2414                         if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
2415                                 release_node = true;
2416                 }
2417                 spin_unlock_irq(&ndlp->lock);
2418
2419                 if (release_node)
2420                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2421                                                 NLP_EVT_DEVICE_RM);
2422         } else {
2423                 /* Good status, call state machine.  However, if another
2424                  * PRLI is outstanding, don't call the state machine
2425                  * because final disposition to Mapped or Unmapped is
2426                  * completed there.
2427                  */
2428                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2429                                         NLP_EVT_CMPL_PRLI);
2430         }
2431
2432 out:
2433         lpfc_els_free_iocb(phba, cmdiocb);
2434         lpfc_nlp_put(ndlp);
2435         return;
2436 }
2437
2438 /**
2439  * lpfc_issue_els_prli - Issue a prli iocb command for a vport
2440  * @vport: pointer to a host virtual N_Port data structure.
2441  * @ndlp: pointer to a node-list data structure.
2442  * @retry: number of retries to the command IOCB.
2443  *
2444  * This routine issues a Process Login (PRLI) ELS command for the
2445  * @vport. The PRLI service parameters are set up in the payload of the
2446  * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
2447  * is put to the IOCB completion callback func field before invoking the
2448  * routine lpfc_sli_issue_iocb() to send out PRLI command.
2449  *
2450  * Note that the ndlp reference count will be incremented by 1 for holding the
2451  * ndlp and the reference to ndlp will be stored into the ndlp field of
2452  * the IOCB for the completion callback function to the PRLI ELS command.
2453  *
2454  * Return code
2455  *   0 - successfully issued prli iocb command for @vport
2456  *   1 - failed to issue prli iocb command for @vport
2457  **/
2458 int
2459 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2460                     uint8_t retry)
2461 {
2462         int rc = 0;
2463         struct lpfc_hba *phba = vport->phba;
2464         PRLI *npr;
2465         struct lpfc_nvme_prli *npr_nvme;
2466         struct lpfc_iocbq *elsiocb;
2467         uint8_t *pcmd;
2468         uint16_t cmdsize;
2469         u32 local_nlp_type, elscmd;
2470
2471         /*
2472          * If we are in RSCN mode, the FC4 types supported from a
2473          * previous GFT_ID command may not be accurate. So, if we
2474          * are a NVME Initiator, always look for the possibility of
2475          * the remote NPort beng a NVME Target.
2476          */
2477         if (phba->sli_rev == LPFC_SLI_REV4 &&
2478             test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
2479             vport->nvmei_support)
2480                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
2481         local_nlp_type = ndlp->nlp_fc4_type;
2482
2483         /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp
2484          * fields here before any of them can complete.
2485          */
2486         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2487         ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
2488         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
2489         clear_bit(NLP_FIRSTBURST, &ndlp->nlp_flag);
2490         clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2491         ndlp->nvme_fb_size = 0;
2492
2493  send_next_prli:
2494         if (local_nlp_type & NLP_FC4_FCP) {
2495                 /* Payload is 4 + 16 = 20 x14 bytes. */
2496                 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
2497                 elscmd = ELS_CMD_PRLI;
2498         } else if (local_nlp_type & NLP_FC4_NVME) {
2499                 /* Payload is 4 + 20 = 24 x18 bytes. */
2500                 cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli));
2501                 elscmd = ELS_CMD_NVMEPRLI;
2502         } else {
2503                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2504                                  "3083 Unknown FC_TYPE x%x ndlp x%06x\n",
2505                                  ndlp->nlp_fc4_type, ndlp->nlp_DID);
2506                 return 1;
2507         }
2508
2509         /* SLI3 ports don't support NVME.  If this rport is a strict NVME
2510          * FC4 type, implicitly LOGO.
2511          */
2512         if (phba->sli_rev == LPFC_SLI_REV3 &&
2513             ndlp->nlp_fc4_type == NLP_FC4_NVME) {
2514                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2515                                  "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n",
2516                                  ndlp->nlp_type);
2517                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
2518                 return 1;
2519         }
2520
2521         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2522                                      ndlp->nlp_DID, elscmd);
2523         if (!elsiocb)
2524                 return 1;
2525
2526         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2527
2528         /* For PRLI request, remainder of payload is service parameters */
2529         memset(pcmd, 0, cmdsize);
2530
2531         if (local_nlp_type & NLP_FC4_FCP) {
2532                 /* Remainder of payload is FCP PRLI parameter page.
2533                  * Note: this data structure is defined as
2534                  * BE/LE in the structure definition so no
2535                  * byte swap call is made.
2536                  */
2537                 *((uint32_t *)(pcmd)) = ELS_CMD_PRLI;
2538                 pcmd += sizeof(uint32_t);
2539                 npr = (PRLI *)pcmd;
2540
2541                 /*
2542                  * If our firmware version is 3.20 or later,
2543                  * set the following bits for FC-TAPE support.
2544                  */
2545                 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
2546                         npr->ConfmComplAllowed = 1;
2547                         npr->Retry = 1;
2548                         npr->TaskRetryIdReq = 1;
2549                 }
2550                 npr->estabImagePair = 1;
2551                 npr->readXferRdyDis = 1;
2552                 if (vport->cfg_first_burst_size)
2553                         npr->writeXferRdyDis = 1;
2554
2555                 /* For FCP support */
2556                 npr->prliType = PRLI_FCP_TYPE;
2557                 npr->initiatorFunc = 1;
2558                 elsiocb->cmd_flag |= LPFC_PRLI_FCP_REQ;
2559
2560                 /* Remove FCP type - processed. */
2561                 local_nlp_type &= ~NLP_FC4_FCP;
2562         } else if (local_nlp_type & NLP_FC4_NVME) {
2563                 /* Remainder of payload is NVME PRLI parameter page.
2564                  * This data structure is the newer definition that
2565                  * uses bf macros so a byte swap is required.
2566                  */
2567                 *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI;
2568                 pcmd += sizeof(uint32_t);
2569                 npr_nvme = (struct lpfc_nvme_prli *)pcmd;
2570                 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
2571                 bf_set(prli_estabImagePair, npr_nvme, 0);  /* Should be 0 */
2572                 if (phba->nsler) {
2573                         bf_set(prli_nsler, npr_nvme, 1);
2574                         bf_set(prli_conf, npr_nvme, 1);
2575                 }
2576
2577                 /* Only initiators request first burst. */
2578                 if ((phba->cfg_nvme_enable_fb) &&
2579                     !phba->nvmet_support)
2580                         bf_set(prli_fba, npr_nvme, 1);
2581
2582                 if (phba->nvmet_support) {
2583                         bf_set(prli_tgt, npr_nvme, 1);
2584                         bf_set(prli_disc, npr_nvme, 1);
2585                 } else {
2586                         bf_set(prli_init, npr_nvme, 1);
2587                         bf_set(prli_conf, npr_nvme, 1);
2588                 }
2589
2590                 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
2591                 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
2592                 elsiocb->cmd_flag |= LPFC_PRLI_NVME_REQ;
2593
2594                 /* Remove NVME type - processed. */
2595                 local_nlp_type &= ~NLP_FC4_NVME;
2596         }
2597
2598         phba->fc_stat.elsXmitPRLI++;
2599         elsiocb->cmd_cmpl = lpfc_cmpl_els_prli;
2600
2601         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2602                               "Issue PRLI:  did:x%x refcnt %d",
2603                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2604         elsiocb->ndlp = lpfc_nlp_get(ndlp);
2605         if (!elsiocb->ndlp) {
2606                 lpfc_els_free_iocb(phba, elsiocb);
2607                 return 1;
2608         }
2609
2610         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2611         if (rc == IOCB_ERROR) {
2612                 lpfc_els_free_iocb(phba, elsiocb);
2613                 lpfc_nlp_put(ndlp);
2614                 return 1;
2615         }
2616
2617         /* The vport counters are used for lpfc_scan_finished, but
2618          * the ndlp is used to track outstanding PRLIs for different
2619          * FC4 types.
2620          */
2621         set_bit(NLP_PRLI_SND, &ndlp->nlp_flag);
2622         spin_lock_irq(&ndlp->lock);
2623         vport->fc_prli_sent++;
2624         ndlp->fc4_prli_sent++;
2625         spin_unlock_irq(&ndlp->lock);
2626
2627         /* The driver supports 2 FC4 types.  Make sure
2628          * a PRLI is issued for all types before exiting.
2629          */
2630         if (phba->sli_rev == LPFC_SLI_REV4 &&
2631             local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME))
2632                 goto send_next_prli;
2633         else
2634                 return 0;
2635 }
2636
2637 /**
2638  * lpfc_rscn_disc - Perform rscn discovery for a vport
2639  * @vport: pointer to a host virtual N_Port data structure.
2640  *
2641  * This routine performs Registration State Change Notification (RSCN)
2642  * discovery for a @vport. If the @vport's node port recovery count is not
2643  * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
2644  * the nodes that need recovery. If none of the PLOGI were needed through
2645  * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
2646  * invoked to check and handle possible more RSCN came in during the period
2647  * of processing the current ones.
2648  **/
2649 static void
2650 lpfc_rscn_disc(struct lpfc_vport *vport)
2651 {
2652         lpfc_can_disctmo(vport);
2653
2654         /* RSCN discovery */
2655         /* go thru NPR nodes and issue ELS PLOGIs */
2656         if (atomic_read(&vport->fc_npr_cnt))
2657                 if (lpfc_els_disc_plogi(vport))
2658                         return;
2659
2660         lpfc_end_rscn(vport);
2661 }
2662
2663 /**
2664  * lpfc_adisc_done - Complete the adisc phase of discovery
2665  * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
2666  *
2667  * This function is called when the final ADISC is completed during discovery.
2668  * This function handles clearing link attention or issuing reg_vpi depending
2669  * on whether npiv is enabled. This function also kicks off the PLOGI phase of
2670  * discovery.
2671  * This function is called with no locks held.
2672  **/
2673 static void
2674 lpfc_adisc_done(struct lpfc_vport *vport)
2675 {
2676         struct lpfc_hba   *phba = vport->phba;
2677
2678         /*
2679          * For NPIV, cmpl_reg_vpi will set port_state to READY,
2680          * and continue discovery.
2681          */
2682         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2683             !test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
2684             (phba->sli_rev < LPFC_SLI_REV4)) {
2685
2686                 /*
2687                  * If link is down, clear_la and reg_vpi will be done after
2688                  * flogi following a link up event
2689                  */
2690                 if (!lpfc_is_link_up(phba))
2691                         return;
2692
2693                 /* The ADISCs are complete.  Doesn't matter if they
2694                  * succeeded or failed because the ADISC completion
2695                  * routine guarantees to call the state machine and
2696                  * the RPI is either unregistered (failed ADISC response)
2697                  * or the RPI is still valid and the node is marked
2698                  * mapped for a target.  The exchanges should be in the
2699                  * correct state. This code is specific to SLI3.
2700                  */
2701                 lpfc_issue_clear_la(phba, vport);
2702                 lpfc_issue_reg_vpi(phba, vport);
2703                 return;
2704         }
2705         /*
2706         * For SLI2, we need to set port_state to READY
2707         * and continue discovery.
2708         */
2709         if (vport->port_state < LPFC_VPORT_READY) {
2710                 /* If we get here, there is nothing to ADISC */
2711                 lpfc_issue_clear_la(phba, vport);
2712                 if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) {
2713                         vport->num_disc_nodes = 0;
2714                         /* go thru NPR list, issue ELS PLOGIs */
2715                         if (atomic_read(&vport->fc_npr_cnt))
2716                                 lpfc_els_disc_plogi(vport);
2717                         if (!vport->num_disc_nodes) {
2718                                 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
2719                                 lpfc_can_disctmo(vport);
2720                                 lpfc_end_rscn(vport);
2721                         }
2722                 }
2723                 vport->port_state = LPFC_VPORT_READY;
2724         } else
2725                 lpfc_rscn_disc(vport);
2726 }
2727
2728 /**
2729  * lpfc_more_adisc - Issue more adisc as needed
2730  * @vport: pointer to a host virtual N_Port data structure.
2731  *
2732  * This routine determines whether there are more ndlps on a @vport
2733  * node list need to have Address Discover (ADISC) issued. If so, it will
2734  * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
2735  * remaining nodes which need to have ADISC sent.
2736  **/
2737 void
2738 lpfc_more_adisc(struct lpfc_vport *vport)
2739 {
2740         if (vport->num_disc_nodes)
2741                 vport->num_disc_nodes--;
2742         /* Continue discovery with <num_disc_nodes> ADISCs to go */
2743         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2744                          "0210 Continue discovery with %d ADISCs to go "
2745                          "Data: x%x x%lx x%x\n",
2746                          vport->num_disc_nodes,
2747                          atomic_read(&vport->fc_adisc_cnt),
2748                          vport->fc_flag, vport->port_state);
2749         /* Check to see if there are more ADISCs to be sent */
2750         if (test_bit(FC_NLP_MORE, &vport->fc_flag)) {
2751                 lpfc_set_disctmo(vport);
2752                 /* go thru NPR nodes and issue any remaining ELS ADISCs */
2753                 lpfc_els_disc_adisc(vport);
2754         }
2755         if (!vport->num_disc_nodes)
2756                 lpfc_adisc_done(vport);
2757         return;
2758 }
2759
2760 /**
2761  * lpfc_cmpl_els_adisc - Completion callback function for adisc
2762  * @phba: pointer to lpfc hba data structure.
2763  * @cmdiocb: pointer to lpfc command iocb data structure.
2764  * @rspiocb: pointer to lpfc response iocb data structure.
2765  *
2766  * This routine is the completion function for issuing the Address Discover
2767  * (ADISC) command. It first checks to see whether link went down during
2768  * the discovery process. If so, the node will be marked as node port
2769  * recovery for issuing discover IOCB by the link attention handler and
2770  * exit. Otherwise, the response status is checked. If error was reported
2771  * in the response status, the ADISC command shall be retried by invoking
2772  * the lpfc_els_retry() routine. Otherwise, if no error was reported in
2773  * the response status, the state machine is invoked to set transition
2774  * with respect to NLP_EVT_CMPL_ADISC event.
2775  **/
2776 static void
2777 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2778                     struct lpfc_iocbq *rspiocb)
2779 {
2780         struct lpfc_vport *vport = cmdiocb->vport;
2781         IOCB_t *irsp;
2782         struct lpfc_nodelist *ndlp;
2783         bool  disc;
2784         u32 ulp_status, ulp_word4, tmo, iotag;
2785         bool release_node = false;
2786
2787         /* we pass cmdiocb to state machine which needs rspiocb as well */
2788         cmdiocb->rsp_iocb = rspiocb;
2789
2790         ndlp = cmdiocb->ndlp;
2791
2792         ulp_status = get_job_ulpstatus(phba, rspiocb);
2793         ulp_word4 = get_job_word4(phba, rspiocb);
2794
2795         if (phba->sli_rev == LPFC_SLI_REV4) {
2796                 tmo = get_wqe_tmo(cmdiocb);
2797                 iotag = get_wqe_reqtag(cmdiocb);
2798         } else {
2799                 irsp = &rspiocb->iocb;
2800                 tmo = irsp->ulpTimeout;
2801                 iotag = irsp->ulpIoTag;
2802         }
2803
2804         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2805                 "ADISC cmpl:      status:x%x/x%x did:x%x",
2806                 ulp_status, ulp_word4,
2807                 ndlp->nlp_DID);
2808
2809         /* Since ndlp can be freed in the disc state machine, note if this node
2810          * is being used during discovery.
2811          */
2812         disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2813         clear_bit(NLP_ADISC_SND, &ndlp->nlp_flag);
2814         /* ADISC completes to NPort <nlp_DID> */
2815         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2816                          "0104 ADISC completes to NPort x%x "
2817                          "IoTag x%x Data: x%x x%x x%x x%x x%x\n",
2818                          ndlp->nlp_DID, iotag,
2819                          ulp_status, ulp_word4,
2820                          tmo, disc, vport->num_disc_nodes);
2821
2822         /* Check to see if link went down during discovery */
2823         if (lpfc_els_chk_latt(vport)) {
2824                 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2825                 goto out;
2826         }
2827
2828         if (ulp_status) {
2829                 /* Check for retry */
2830                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2831                         /* ELS command is being retried */
2832                         if (disc) {
2833                                 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2834                                 lpfc_set_disctmo(vport);
2835                         }
2836                         goto out;
2837                 }
2838                 /* Warn ADISC status */
2839                 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
2840                               "2755 ADISC DID:%06X Status:x%x/x%x\n",
2841                               ndlp->nlp_DID, ulp_status,
2842                               ulp_word4);
2843                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2844                                         NLP_EVT_CMPL_ADISC);
2845
2846                 /* As long as this node is not registered with the SCSI or NVMe
2847                  * transport, it is no longer an active node. Otherwise
2848                  * devloss handles the final cleanup.
2849                  */
2850                 spin_lock_irq(&ndlp->lock);
2851                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2852                         clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2853                         if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
2854                                 release_node = true;
2855                 }
2856                 spin_unlock_irq(&ndlp->lock);
2857
2858                 if (release_node)
2859                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2860                                                 NLP_EVT_DEVICE_RM);
2861         } else
2862                 /* Good status, call state machine */
2863                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2864                                         NLP_EVT_CMPL_ADISC);
2865
2866         /* Check to see if there are more ADISCs to be sent */
2867         if (disc && vport->num_disc_nodes)
2868                 lpfc_more_adisc(vport);
2869 out:
2870         lpfc_els_free_iocb(phba, cmdiocb);
2871         lpfc_nlp_put(ndlp);
2872         return;
2873 }
2874
2875 /**
2876  * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
2877  * @vport: pointer to a virtual N_Port data structure.
2878  * @ndlp: pointer to a node-list data structure.
2879  * @retry: number of retries to the command IOCB.
2880  *
2881  * This routine issues an Address Discover (ADISC) for an @ndlp on a
2882  * @vport. It prepares the payload of the ADISC ELS command, updates the
2883  * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
2884  * to issue the ADISC ELS command.
2885  *
2886  * Note that the ndlp reference count will be incremented by 1 for holding the
2887  * ndlp and the reference to ndlp will be stored into the ndlp field of
2888  * the IOCB for the completion callback function to the ADISC ELS command.
2889  *
2890  * Return code
2891  *   0 - successfully issued adisc
2892  *   1 - failed to issue adisc
2893  **/
2894 int
2895 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2896                      uint8_t retry)
2897 {
2898         int rc = 0;
2899         struct lpfc_hba  *phba = vport->phba;
2900         ADISC *ap;
2901         struct lpfc_iocbq *elsiocb;
2902         uint8_t *pcmd;
2903         uint16_t cmdsize;
2904
2905         cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
2906         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2907                                      ndlp->nlp_DID, ELS_CMD_ADISC);
2908         if (!elsiocb)
2909                 return 1;
2910
2911         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2912
2913         /* For ADISC request, remainder of payload is service parameters */
2914         *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
2915         pcmd += sizeof(uint32_t);
2916
2917         /* Fill in ADISC payload */
2918         ap = (ADISC *) pcmd;
2919         ap->hardAL_PA = phba->fc_pref_ALPA;
2920         memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
2921         memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2922         ap->DID = be32_to_cpu(vport->fc_myDID);
2923
2924         phba->fc_stat.elsXmitADISC++;
2925         elsiocb->cmd_cmpl = lpfc_cmpl_els_adisc;
2926         set_bit(NLP_ADISC_SND, &ndlp->nlp_flag);
2927         elsiocb->ndlp = lpfc_nlp_get(ndlp);
2928         if (!elsiocb->ndlp) {
2929                 lpfc_els_free_iocb(phba, elsiocb);
2930                 goto err;
2931         }
2932
2933         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2934                               "Issue ADISC:   did:x%x refcnt %d",
2935                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2936
2937         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2938         if (rc == IOCB_ERROR) {
2939                 lpfc_els_free_iocb(phba, elsiocb);
2940                 lpfc_nlp_put(ndlp);
2941                 goto err;
2942         }
2943
2944         return 0;
2945
2946 err:
2947         clear_bit(NLP_ADISC_SND, &ndlp->nlp_flag);
2948         return 1;
2949 }
2950
2951 /**
2952  * lpfc_cmpl_els_logo - Completion callback function for logo
2953  * @phba: pointer to lpfc hba data structure.
2954  * @cmdiocb: pointer to lpfc command iocb data structure.
2955  * @rspiocb: pointer to lpfc response iocb data structure.
2956  *
2957  * This routine is the completion function for issuing the ELS Logout (LOGO)
2958  * command. If no error status was reported from the LOGO response, the
2959  * state machine of the associated ndlp shall be invoked for transition with
2960  * respect to NLP_EVT_CMPL_LOGO event.
2961  **/
2962 static void
2963 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2964                    struct lpfc_iocbq *rspiocb)
2965 {
2966         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
2967         struct lpfc_vport *vport = ndlp->vport;
2968         IOCB_t *irsp;
2969         uint32_t skip_recovery = 0;
2970         int wake_up_waiter = 0;
2971         u32 ulp_status;
2972         u32 ulp_word4;
2973         u32 tmo, iotag;
2974
2975         /* we pass cmdiocb to state machine which needs rspiocb as well */
2976         cmdiocb->rsp_iocb = rspiocb;
2977
2978         ulp_status = get_job_ulpstatus(phba, rspiocb);
2979         ulp_word4 = get_job_word4(phba, rspiocb);
2980
2981         if (phba->sli_rev == LPFC_SLI_REV4) {
2982                 tmo = get_wqe_tmo(cmdiocb);
2983                 iotag = get_wqe_reqtag(cmdiocb);
2984         } else {
2985                 irsp = &rspiocb->iocb;
2986                 tmo = irsp->ulpTimeout;
2987                 iotag = irsp->ulpIoTag;
2988         }
2989
2990         clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
2991         if (test_and_clear_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags))
2992                 wake_up_waiter = 1;
2993
2994         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2995                 "LOGO cmpl:       status:x%x/x%x did:x%x",
2996                 ulp_status, ulp_word4,
2997                 ndlp->nlp_DID);
2998
2999         /* LOGO completes to NPort <nlp_DID> */
3000         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3001                          "0105 LOGO completes to NPort x%x "
3002                          "IoTag x%x refcnt %d nflags x%lx xflags x%x "
3003                          "Data: x%x x%x x%x x%x\n",
3004                          ndlp->nlp_DID, iotag,
3005                          kref_read(&ndlp->kref), ndlp->nlp_flag,
3006                          ndlp->fc4_xpt_flags, ulp_status, ulp_word4,
3007                          tmo, vport->num_disc_nodes);
3008
3009         if (lpfc_els_chk_latt(vport)) {
3010                 skip_recovery = 1;
3011                 goto out;
3012         }
3013
3014         /* The LOGO will not be retried on failure.  A LOGO was
3015          * issued to the remote rport and a ACC or RJT or no Answer are
3016          * all acceptable.  Note the failure and move forward with
3017          * discovery.  The PLOGI will retry.
3018          */
3019         if (ulp_status) {
3020                 /* Warn LOGO status */
3021                 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
3022                               "2756 LOGO, No Retry DID:%06X "
3023                               "Status:x%x/x%x\n",
3024                               ndlp->nlp_DID, ulp_status,
3025                               ulp_word4);
3026
3027                 if (lpfc_error_lost_link(vport, ulp_status, ulp_word4))
3028                         skip_recovery = 1;
3029         }
3030
3031         /* Call state machine. This will unregister the rpi if needed. */
3032         lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
3033
3034 out:
3035         /* At this point, the LOGO processing is complete. NOTE: For a
3036          * pt2pt topology, we are assuming the NPortID will only change
3037          * on link up processing. For a LOGO / PLOGI initiated by the
3038          * Initiator, we are assuming the NPortID is not going to change.
3039          */
3040
3041         if (wake_up_waiter && ndlp->logo_waitq)
3042                 wake_up(ndlp->logo_waitq);
3043         /*
3044          * If the node is a target, the handling attempts to recover the port.
3045          * For any other port type, the rpi is unregistered as an implicit
3046          * LOGO.
3047          */
3048         if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) &&
3049             skip_recovery == 0) {
3050                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3051                 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
3052
3053                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3054                                  "3187 LOGO completes to NPort x%x: Start "
3055                                  "Recovery Data: x%x x%x x%x x%x\n",
3056                                  ndlp->nlp_DID, ulp_status,
3057                                  ulp_word4, tmo,
3058                                  vport->num_disc_nodes);
3059
3060                 lpfc_els_free_iocb(phba, cmdiocb);
3061                 lpfc_nlp_put(ndlp);
3062
3063                 lpfc_disc_start(vport);
3064                 return;
3065         }
3066
3067         /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the
3068          * driver sends a LOGO to the rport to cleanup.  For fabric and
3069          * initiator ports cleanup the node as long as it the node is not
3070          * register with the transport.
3071          */
3072         if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
3073                 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
3074                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
3075                                         NLP_EVT_DEVICE_RM);
3076         }
3077
3078         /* Driver is done with the I/O. */
3079         lpfc_els_free_iocb(phba, cmdiocb);
3080         lpfc_nlp_put(ndlp);
3081 }
3082
3083 /**
3084  * lpfc_issue_els_logo - Issue a logo to an node on a vport
3085  * @vport: pointer to a virtual N_Port data structure.
3086  * @ndlp: pointer to a node-list data structure.
3087  * @retry: number of retries to the command IOCB.
3088  *
3089  * This routine constructs and issues an ELS Logout (LOGO) iocb command
3090  * to a remote node, referred by an @ndlp on a @vport. It constructs the
3091  * payload of the IOCB, properly sets up the @ndlp state, and invokes the
3092  * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
3093  *
3094  * Note that the ndlp reference count will be incremented by 1 for holding the
3095  * ndlp and the reference to ndlp will be stored into the ndlp field of
3096  * the IOCB for the completion callback function to the LOGO ELS command.
3097  *
3098  * Callers of this routine are expected to unregister the RPI first
3099  *
3100  * Return code
3101  *   0 - successfully issued logo
3102  *   1 - failed to issue logo
3103  **/
3104 int
3105 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3106                     uint8_t retry)
3107 {
3108         struct lpfc_hba  *phba = vport->phba;
3109         struct lpfc_iocbq *elsiocb;
3110         uint8_t *pcmd;
3111         uint16_t cmdsize;
3112         int rc;
3113
3114         if (test_bit(NLP_LOGO_SND, &ndlp->nlp_flag))
3115                 return 0;
3116
3117         cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
3118         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3119                                      ndlp->nlp_DID, ELS_CMD_LOGO);
3120         if (!elsiocb)
3121                 return 1;
3122
3123         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3124         *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
3125         pcmd += sizeof(uint32_t);
3126
3127         /* Fill in LOGO payload */
3128         *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
3129         pcmd += sizeof(uint32_t);
3130         memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
3131
3132         phba->fc_stat.elsXmitLOGO++;
3133         elsiocb->cmd_cmpl = lpfc_cmpl_els_logo;
3134         set_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
3135         clear_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
3136         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3137         if (!elsiocb->ndlp) {
3138                 lpfc_els_free_iocb(phba, elsiocb);
3139                 goto err;
3140         }
3141
3142         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3143                               "Issue LOGO:      did:x%x refcnt %d",
3144                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3145
3146         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3147         if (rc == IOCB_ERROR) {
3148                 lpfc_els_free_iocb(phba, elsiocb);
3149                 lpfc_nlp_put(ndlp);
3150                 goto err;
3151         }
3152
3153         spin_lock_irq(&ndlp->lock);
3154         ndlp->nlp_prev_state = ndlp->nlp_state;
3155         spin_unlock_irq(&ndlp->lock);
3156         lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
3157         return 0;
3158
3159 err:
3160         clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
3161         return 1;
3162 }
3163
3164 /**
3165  * lpfc_cmpl_els_cmd - Completion callback function for generic els command
3166  * @phba: pointer to lpfc hba data structure.
3167  * @cmdiocb: pointer to lpfc command iocb data structure.
3168  * @rspiocb: pointer to lpfc response iocb data structure.
3169  *
3170  * This routine is a generic completion callback function for ELS commands.
3171  * Specifically, it is the callback function which does not need to perform
3172  * any command specific operations. It is currently used by the ELS command
3173  * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel
3174  * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr().
3175  * Other than certain debug loggings, this callback function simply invokes the
3176  * lpfc_els_chk_latt() routine to check whether link went down during the
3177  * discovery process.
3178  **/
3179 static void
3180 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3181                   struct lpfc_iocbq *rspiocb)
3182 {
3183         struct lpfc_vport *vport = cmdiocb->vport;
3184         struct lpfc_nodelist *free_ndlp;
3185         IOCB_t *irsp;
3186         u32 ulp_status, ulp_word4, tmo, did, iotag;
3187
3188         ulp_status = get_job_ulpstatus(phba, rspiocb);
3189         ulp_word4 = get_job_word4(phba, rspiocb);
3190         did = get_job_els_rsp64_did(phba, cmdiocb);
3191
3192         if (phba->sli_rev == LPFC_SLI_REV4) {
3193                 tmo = get_wqe_tmo(cmdiocb);
3194                 iotag = get_wqe_reqtag(cmdiocb);
3195         } else {
3196                 irsp = &rspiocb->iocb;
3197                 tmo = irsp->ulpTimeout;
3198                 iotag = irsp->ulpIoTag;
3199         }
3200
3201         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3202                               "ELS cmd cmpl:    status:x%x/x%x did:x%x",
3203                               ulp_status, ulp_word4, did);
3204
3205         /* ELS cmd tag <ulpIoTag> completes */
3206         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3207                          "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
3208                          iotag, ulp_status, ulp_word4, tmo);
3209
3210         /* Check to see if link went down during discovery */
3211         lpfc_els_chk_latt(vport);
3212
3213         free_ndlp = cmdiocb->ndlp;
3214
3215         lpfc_els_free_iocb(phba, cmdiocb);
3216         lpfc_nlp_put(free_ndlp);
3217 }
3218
3219 /**
3220  * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node.
3221  * @vport: pointer to lpfc_vport data structure.
3222  * @fc_ndlp: pointer to the fabric controller (0xfffffd) node.
3223  *
3224  * This routine registers the rpi assigned to the fabric controller
3225  * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED
3226  * state triggering a registration with the SCSI transport.
3227  *
3228  * This routine is single out because the fabric controller node
3229  * does not receive a PLOGI.  This routine is consumed by the
3230  * SCR and RDF ELS commands.  Callers are expected to qualify
3231  * with SLI4 first.
3232  **/
3233 static int
3234 lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp)
3235 {
3236         int rc;
3237         struct lpfc_hba *phba = vport->phba;
3238         struct lpfc_nodelist *ns_ndlp;
3239         LPFC_MBOXQ_t *mbox;
3240
3241         if (test_bit(NLP_RPI_REGISTERED, &fc_ndlp->nlp_flag))
3242                 return 0;
3243
3244         ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
3245         if (!ns_ndlp)
3246                 return -ENODEV;
3247
3248         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3249                          "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n",
3250                          __func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID,
3251                          ns_ndlp->nlp_state);
3252         if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
3253                 return -ENODEV;
3254
3255         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3256         if (!mbox) {
3257                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3258                                  "0936 %s: no memory for reg_login "
3259                                  "Data: x%x x%x x%lx x%x\n", __func__,
3260                                  fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
3261                                  fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
3262                 return -ENOMEM;
3263         }
3264         rc = lpfc_reg_rpi(phba, vport->vpi, fc_ndlp->nlp_DID,
3265                           (u8 *)&vport->fc_sparam, mbox, fc_ndlp->nlp_rpi);
3266         if (rc) {
3267                 rc = -EACCES;
3268                 goto out;
3269         }
3270
3271         set_bit(NLP_REG_LOGIN_SEND, &fc_ndlp->nlp_flag);
3272         mbox->mbox_cmpl = lpfc_mbx_cmpl_fc_reg_login;
3273         mbox->ctx_ndlp = lpfc_nlp_get(fc_ndlp);
3274         if (!mbox->ctx_ndlp) {
3275                 rc = -ENOMEM;
3276                 goto out;
3277         }
3278
3279         mbox->vport = vport;
3280         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3281         if (rc == MBX_NOT_FINISHED) {
3282                 rc = -ENODEV;
3283                 lpfc_nlp_put(fc_ndlp);
3284                 goto out;
3285         }
3286         /* Success path. Exit. */
3287         lpfc_nlp_set_state(vport, fc_ndlp,
3288                            NLP_STE_REG_LOGIN_ISSUE);
3289         return 0;
3290
3291  out:
3292         lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
3293         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3294                          "0938 %s: failed to format reg_login "
3295                          "Data: x%x x%x x%lx x%x\n", __func__,
3296                          fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
3297                          fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
3298         return rc;
3299 }
3300
3301 /**
3302  * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd
3303  * @phba: pointer to lpfc hba data structure.
3304  * @cmdiocb: pointer to lpfc command iocb data structure.
3305  * @rspiocb: pointer to lpfc response iocb data structure.
3306  *
3307  * This routine is a generic completion callback function for Discovery ELS cmd.
3308  * Currently used by the ELS command issuing routines for the ELS State Change
3309  * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf().
3310  * These commands will be retried once only for ELS timeout errors.
3311  **/
3312 static void
3313 lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3314                        struct lpfc_iocbq *rspiocb)
3315 {
3316         struct lpfc_vport *vport = cmdiocb->vport;
3317         IOCB_t *irsp;
3318         struct lpfc_els_rdf_rsp *prdf;
3319         struct lpfc_dmabuf *pcmd, *prsp;
3320         u32 *pdata;
3321         u32 cmd;
3322         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
3323         u32 ulp_status, ulp_word4, tmo, did, iotag;
3324
3325         ulp_status = get_job_ulpstatus(phba, rspiocb);
3326         ulp_word4 = get_job_word4(phba, rspiocb);
3327         did = get_job_els_rsp64_did(phba, cmdiocb);
3328
3329         if (phba->sli_rev == LPFC_SLI_REV4) {
3330                 tmo = get_wqe_tmo(cmdiocb);
3331                 iotag = get_wqe_reqtag(cmdiocb);
3332         } else {
3333                 irsp = &rspiocb->iocb;
3334                 tmo = irsp->ulpTimeout;
3335                 iotag = irsp->ulpIoTag;
3336         }
3337
3338         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3339                 "ELS cmd cmpl:    status:x%x/x%x did:x%x",
3340                 ulp_status, ulp_word4, did);
3341
3342         /* ELS cmd tag <ulpIoTag> completes */
3343         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3344                          "0217 ELS cmd tag x%x completes Data: x%x x%x x%x x%x\n",
3345                          iotag, ulp_status, ulp_word4, tmo, cmdiocb->retry);
3346
3347         pcmd = cmdiocb->cmd_dmabuf;
3348         if (!pcmd)
3349                 goto out;
3350
3351         pdata = (u32 *)pcmd->virt;
3352         if (!pdata)
3353                 goto out;
3354         cmd = *pdata;
3355
3356         /* Only 1 retry for ELS Timeout only */
3357         if (ulp_status == IOSTAT_LOCAL_REJECT &&
3358             ((ulp_word4 & IOERR_PARAM_MASK) ==
3359             IOERR_SEQUENCE_TIMEOUT)) {
3360                 cmdiocb->retry++;
3361                 if (cmdiocb->retry <= 1) {
3362                         switch (cmd) {
3363                         case ELS_CMD_SCR:
3364                                 lpfc_issue_els_scr(vport, cmdiocb->retry);
3365                                 break;
3366                         case ELS_CMD_EDC:
3367                                 lpfc_issue_els_edc(vport, cmdiocb->retry);
3368                                 break;
3369                         case ELS_CMD_RDF:
3370                                 lpfc_issue_els_rdf(vport, cmdiocb->retry);
3371                                 break;
3372                         }
3373                         goto out;
3374                 }
3375                 phba->fc_stat.elsRetryExceeded++;
3376         }
3377         if (cmd == ELS_CMD_EDC) {
3378                 /* must be called before checking uplStatus and returning */
3379                 lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb);
3380                 return;
3381         }
3382         if (ulp_status) {
3383                 /* ELS discovery cmd completes with error */
3384                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
3385                                  "4203 ELS cmd x%x error: x%x x%X\n", cmd,
3386                                  ulp_status, ulp_word4);
3387                 goto out;
3388         }
3389
3390         /* The RDF response doesn't have any impact on the running driver
3391          * but the notification descriptors are dumped here for support.
3392          */
3393         if (cmd == ELS_CMD_RDF) {
3394                 int i;
3395
3396                 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
3397                 if (!prsp)
3398                         goto out;
3399
3400                 prdf = (struct lpfc_els_rdf_rsp *)prsp->virt;
3401                 if (!prdf)
3402                         goto out;
3403                 if (!lpfc_is_els_acc_rsp(prsp))
3404                         goto out;
3405
3406                 for (i = 0; i < ELS_RDF_REG_TAG_CNT &&
3407                             i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++)
3408                         lpfc_printf_vlog(vport, KERN_INFO,
3409                                          LOG_ELS | LOG_CGN_MGMT,
3410                                          "4677 Fabric RDF Notification Grant "
3411                                          "Data: 0x%08x Reg: %x %x\n",
3412                                          be32_to_cpu(
3413                                                  prdf->reg_d1.desc_tags[i]),
3414                                          phba->cgn_reg_signal,
3415                                          phba->cgn_reg_fpin);
3416         }
3417
3418 out:
3419         /* Check to see if link went down during discovery */
3420         lpfc_els_chk_latt(vport);
3421         lpfc_els_free_iocb(phba, cmdiocb);
3422         lpfc_nlp_put(ndlp);
3423         return;
3424 }
3425
3426 /**
3427  * lpfc_issue_els_scr - Issue a scr to an node on a vport
3428  * @vport: pointer to a host virtual N_Port data structure.
3429  * @retry: retry counter for the command IOCB.
3430  *
3431  * This routine issues a State Change Request (SCR) to a fabric node
3432  * on a @vport. The remote node is Fabric Controller (0xfffffd). It
3433  * first search the @vport node list to find the matching ndlp. If no such
3434  * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
3435  * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
3436  * routine is invoked to send the SCR IOCB.
3437  *
3438  * Note that the ndlp reference count will be incremented by 1 for holding the
3439  * ndlp and the reference to ndlp will be stored into the ndlp field of
3440  * the IOCB for the completion callback function to the SCR ELS command.
3441  *
3442  * Return code
3443  *   0 - Successfully issued scr command
3444  *   1 - Failed to issue scr command
3445  **/
3446 int
3447 lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
3448 {
3449         int rc = 0;
3450         struct lpfc_hba  *phba = vport->phba;
3451         struct lpfc_iocbq *elsiocb;
3452         uint8_t *pcmd;
3453         uint16_t cmdsize;
3454         struct lpfc_nodelist *ndlp;
3455
3456         cmdsize = (sizeof(uint32_t) + sizeof(SCR));
3457
3458         ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3459         if (!ndlp) {
3460                 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3461                 if (!ndlp)
3462                         return 1;
3463                 lpfc_enqueue_node(vport, ndlp);
3464         }
3465
3466         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3467                                      ndlp->nlp_DID, ELS_CMD_SCR);
3468         if (!elsiocb)
3469                 return 1;
3470
3471         if (phba->sli_rev == LPFC_SLI_REV4) {
3472                 rc = lpfc_reg_fab_ctrl_node(vport, ndlp);
3473                 if (rc) {
3474                         lpfc_els_free_iocb(phba, elsiocb);
3475                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3476                                          "0937 %s: Failed to reg fc node, rc %d\n",
3477                                          __func__, rc);
3478                         return 1;
3479                 }
3480         }
3481         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3482
3483         *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
3484         pcmd += sizeof(uint32_t);
3485
3486         /* For SCR, remainder of payload is SCR parameter page */
3487         memset(pcmd, 0, sizeof(SCR));
3488         ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
3489
3490         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3491                 "Issue SCR:       did:x%x",
3492                 ndlp->nlp_DID, 0, 0);
3493
3494         phba->fc_stat.elsXmitSCR++;
3495         elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
3496         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3497         if (!elsiocb->ndlp) {
3498                 lpfc_els_free_iocb(phba, elsiocb);
3499                 return 1;
3500         }
3501
3502         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3503                               "Issue SCR:     did:x%x refcnt %d",
3504                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3505
3506         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3507         if (rc == IOCB_ERROR) {
3508                 lpfc_els_free_iocb(phba, elsiocb);
3509                 lpfc_nlp_put(ndlp);
3510                 return 1;
3511         }
3512
3513         return 0;
3514 }
3515
3516 /**
3517  * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric)
3518  *   or the other nport (pt2pt).
3519  * @vport: pointer to a host virtual N_Port data structure.
3520  * @retry: number of retries to the command IOCB.
3521  *
3522  * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD)
3523  *  when connected to a fabric, or to the remote port when connected
3524  *  in point-to-point mode. When sent to the Fabric Controller, it will
3525  *  replay the RSCN to registered recipients.
3526  *
3527  * Note that the ndlp reference count will be incremented by 1 for holding the
3528  * ndlp and the reference to ndlp will be stored into the ndlp field of
3529  * the IOCB for the completion callback function to the RSCN ELS command.
3530  *
3531  * Return code
3532  *   0 - Successfully issued RSCN command
3533  *   1 - Failed to issue RSCN command
3534  **/
3535 int
3536 lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
3537 {
3538         int rc = 0;
3539         struct lpfc_hba *phba = vport->phba;
3540         struct lpfc_iocbq *elsiocb;
3541         struct lpfc_nodelist *ndlp;
3542         struct {
3543                 struct fc_els_rscn rscn;
3544                 struct fc_els_rscn_page portid;
3545         } *event;
3546         uint32_t nportid;
3547         uint16_t cmdsize = sizeof(*event);
3548
3549         /* Not supported for private loop */
3550         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
3551             !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))
3552                 return 1;
3553
3554         if (test_bit(FC_PT2PT, &vport->fc_flag)) {
3555                 /* find any mapped nport - that would be the other nport */
3556                 ndlp = lpfc_findnode_mapped(vport);
3557                 if (!ndlp)
3558                         return 1;
3559         } else {
3560                 nportid = FC_FID_FCTRL;
3561                 /* find the fabric controller node */
3562                 ndlp = lpfc_findnode_did(vport, nportid);
3563                 if (!ndlp) {
3564                         /* if one didn't exist, make one */
3565                         ndlp = lpfc_nlp_init(vport, nportid);
3566                         if (!ndlp)
3567                                 return 1;
3568                         lpfc_enqueue_node(vport, ndlp);
3569                 }
3570         }
3571
3572         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3573                                      ndlp->nlp_DID, ELS_CMD_RSCN_XMT);
3574
3575         if (!elsiocb)
3576                 return 1;
3577
3578         event = elsiocb->cmd_dmabuf->virt;
3579
3580         event->rscn.rscn_cmd = ELS_RSCN;
3581         event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page);
3582         event->rscn.rscn_plen = cpu_to_be16(cmdsize);
3583
3584         nportid = vport->fc_myDID;
3585         /* appears that page flags must be 0 for fabric to broadcast RSCN */
3586         event->portid.rscn_page_flags = 0;
3587         event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16;
3588         event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8;
3589         event->portid.rscn_fid[2] = nportid & 0x000000FF;
3590
3591         phba->fc_stat.elsXmitRSCN++;
3592         elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
3593         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3594         if (!elsiocb->ndlp) {
3595                 lpfc_els_free_iocb(phba, elsiocb);
3596                 return 1;
3597         }
3598
3599         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3600                               "Issue RSCN:       did:x%x",
3601                               ndlp->nlp_DID, 0, 0);
3602
3603         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3604         if (rc == IOCB_ERROR) {
3605                 lpfc_els_free_iocb(phba, elsiocb);
3606                 lpfc_nlp_put(ndlp);
3607                 return 1;
3608         }
3609
3610         return 0;
3611 }
3612
3613 /**
3614  * lpfc_issue_els_farpr - Issue a farp to an node on a vport
3615  * @vport: pointer to a host virtual N_Port data structure.
3616  * @nportid: N_Port identifier to the remote node.
3617  * @retry: number of retries to the command IOCB.
3618  *
3619  * This routine issues a Fibre Channel Address Resolution Response
3620  * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
3621  * is passed into the function. It first search the @vport node list to find
3622  * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
3623  * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
3624  * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
3625  *
3626  * Note that the ndlp reference count will be incremented by 1 for holding the
3627  * ndlp and the reference to ndlp will be stored into the ndlp field of
3628  * the IOCB for the completion callback function to the FARPR ELS command.
3629  *
3630  * Return code
3631  *   0 - Successfully issued farpr command
3632  *   1 - Failed to issue farpr command
3633  **/
3634 static int
3635 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
3636 {
3637         int rc = 0;
3638         struct lpfc_hba  *phba = vport->phba;
3639         struct lpfc_iocbq *elsiocb;
3640         FARP *fp;
3641         uint8_t *pcmd;
3642         uint32_t *lp;
3643         uint16_t cmdsize;
3644         struct lpfc_nodelist *ondlp;
3645         struct lpfc_nodelist *ndlp;
3646
3647         cmdsize = (sizeof(uint32_t) + sizeof(FARP));
3648
3649         ndlp = lpfc_findnode_did(vport, nportid);
3650         if (!ndlp) {
3651                 ndlp = lpfc_nlp_init(vport, nportid);
3652                 if (!ndlp)
3653                         return 1;
3654                 lpfc_enqueue_node(vport, ndlp);
3655         }
3656
3657         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3658                                      ndlp->nlp_DID, ELS_CMD_FARPR);
3659         if (!elsiocb)
3660                 return 1;
3661
3662         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3663
3664         *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
3665         pcmd += sizeof(uint32_t);
3666
3667         /* Fill in FARPR payload */
3668         fp = (FARP *) (pcmd);
3669         memset(fp, 0, sizeof(FARP));
3670         lp = (uint32_t *) pcmd;
3671         *lp++ = be32_to_cpu(nportid);
3672         *lp++ = be32_to_cpu(vport->fc_myDID);
3673         fp->Rflags = 0;
3674         fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
3675
3676         memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
3677         memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3678         ondlp = lpfc_findnode_did(vport, nportid);
3679         if (ondlp) {
3680                 memcpy(&fp->OportName, &ondlp->nlp_portname,
3681                        sizeof(struct lpfc_name));
3682                 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
3683                        sizeof(struct lpfc_name));
3684         }
3685
3686         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3687                 "Issue FARPR:     did:x%x",
3688                 ndlp->nlp_DID, 0, 0);
3689
3690         phba->fc_stat.elsXmitFARPR++;
3691         elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
3692         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3693         if (!elsiocb->ndlp) {
3694                 lpfc_els_free_iocb(phba, elsiocb);
3695                 return 1;
3696         }
3697
3698         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3699         if (rc == IOCB_ERROR) {
3700                 /* The additional lpfc_nlp_put will cause the following
3701                  * lpfc_els_free_iocb routine to trigger the release of
3702                  * the node.
3703                  */
3704                 lpfc_els_free_iocb(phba, elsiocb);
3705                 lpfc_nlp_put(ndlp);
3706                 return 1;
3707         }
3708         /* This will cause the callback-function lpfc_cmpl_els_cmd to
3709          * trigger the release of the node.
3710          */
3711         /* Don't release reference count as RDF is likely outstanding */
3712         return 0;
3713 }
3714
3715 /**
3716  * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric.
3717  * @vport: pointer to a host virtual N_Port data structure.
3718  * @retry: retry counter for the command IOCB.
3719  *
3720  * This routine issues an ELS RDF to the Fabric Controller to register
3721  * for diagnostic functions.
3722  *
3723  * Note that the ndlp reference count will be incremented by 1 for holding the
3724  * ndlp and the reference to ndlp will be stored into the ndlp field of
3725  * the IOCB for the completion callback function to the RDF ELS command.
3726  *
3727  * Return code
3728  *   0 - Successfully issued rdf command
3729  *   1 - Failed to issue rdf command
3730  **/
3731 int
3732 lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
3733 {
3734         struct lpfc_hba *phba = vport->phba;
3735         struct lpfc_iocbq *elsiocb;
3736         struct lpfc_els_rdf_req *prdf;
3737         struct lpfc_nodelist *ndlp;
3738         uint16_t cmdsize;
3739         int rc;
3740
3741         cmdsize = sizeof(*prdf);
3742
3743         ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3744         if (!ndlp) {
3745                 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3746                 if (!ndlp)
3747                         return -ENODEV;
3748                 lpfc_enqueue_node(vport, ndlp);
3749         }
3750
3751         /* RDF ELS is not required on an NPIV VN_Port. */
3752         if (vport->port_type == LPFC_NPIV_PORT)
3753                 return -EACCES;
3754
3755         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3756                                      ndlp->nlp_DID, ELS_CMD_RDF);
3757         if (!elsiocb)
3758                 return -ENOMEM;
3759
3760         /* Configure the payload for the supported FPIN events. */
3761         prdf = (struct lpfc_els_rdf_req *)elsiocb->cmd_dmabuf->virt;
3762         memset(prdf, 0, cmdsize);
3763         prdf->rdf.fpin_cmd = ELS_RDF;
3764         prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) -
3765                                          sizeof(struct fc_els_rdf));
3766         prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER);
3767         prdf->reg_d1.reg_desc.desc_len = cpu_to_be32(
3768                                 FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1));
3769         prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT);
3770         prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY);
3771         prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY);
3772         prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST);
3773         prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION);
3774
3775         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3776                          "6444 Xmit RDF to remote NPORT x%x Reg: %x %x\n",
3777                          ndlp->nlp_DID, phba->cgn_reg_signal,
3778                          phba->cgn_reg_fpin);
3779
3780         phba->cgn_fpin_frequency = LPFC_FPIN_INIT_FREQ;
3781         elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
3782         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3783         if (!elsiocb->ndlp) {
3784                 lpfc_els_free_iocb(phba, elsiocb);
3785                 return -EIO;
3786         }
3787
3788         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3789                               "Issue RDF:     did:x%x refcnt %d",
3790                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3791
3792         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3793         if (rc == IOCB_ERROR) {
3794                 lpfc_els_free_iocb(phba, elsiocb);
3795                 lpfc_nlp_put(ndlp);
3796                 return -EIO;
3797         }
3798         return 0;
3799 }
3800
3801  /**
3802   * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric.
3803   * @vport: pointer to a host virtual N_Port data structure.
3804   * @cmdiocb: pointer to lpfc command iocb data structure.
3805   * @ndlp: pointer to a node-list data structure.
3806   *
3807   * A received RDF implies a possible change to fabric supported diagnostic
3808   * functions.  This routine sends LS_ACC and then has the Nx_Port issue a new
3809   * RDF request to reregister for supported diagnostic functions.
3810   *
3811   * Return code
3812   *   0 - Success
3813   *   -EIO - Failed to process received RDF
3814   **/
3815 static int
3816 lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
3817                  struct lpfc_nodelist *ndlp)
3818 {
3819         /* Send LS_ACC */
3820         if (lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL)) {
3821                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3822                                  "1623 Failed to RDF_ACC from x%x for x%x\n",
3823                                  ndlp->nlp_DID, vport->fc_myDID);
3824                 return -EIO;
3825         }
3826
3827         /* Issue new RDF for reregistering */
3828         if (lpfc_issue_els_rdf(vport, 0)) {
3829                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3830                                  "2623 Failed to re register RDF for x%x\n",
3831                                  vport->fc_myDID);
3832                 return -EIO;
3833         }
3834
3835         return 0;
3836 }
3837
3838 /**
3839  * lpfc_least_capable_settings - helper function for EDC rsp processing
3840  * @phba: pointer to lpfc hba data structure.
3841  * @pcgd: pointer to congestion detection descriptor in EDC rsp.
3842  *
3843  * This helper routine determines the least capable setting for
3844  * congestion signals, signal freq, including scale, from the
3845  * congestion detection descriptor in the EDC rsp.  The routine
3846  * sets @phba values in preparation for a set_featues mailbox.
3847  **/
3848 static void
3849 lpfc_least_capable_settings(struct lpfc_hba *phba,
3850                             struct fc_diag_cg_sig_desc *pcgd)
3851 {
3852         u32 rsp_sig_cap = 0, drv_sig_cap = 0;
3853         u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0;
3854
3855         /* Get rsp signal and frequency capabilities.  */
3856         rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability);
3857         rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count);
3858         rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units);
3859
3860         /* If the Fport does not support signals. Set FPIN only */
3861         if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED)
3862                 goto out_no_support;
3863
3864         /* Apply the xmt scale to the xmt cycle to get the correct frequency.
3865          * Adapter default is 100 millisSeconds.  Convert all xmt cycle values
3866          * to milliSeconds.
3867          */
3868         switch (rsp_sig_freq_scale) {
3869         case EDC_CG_SIGFREQ_SEC:
3870                 rsp_sig_freq_cyc *= MSEC_PER_SEC;
3871                 break;
3872         case EDC_CG_SIGFREQ_MSEC:
3873                 rsp_sig_freq_cyc = 1;
3874                 break;
3875         default:
3876                 goto out_no_support;
3877         }
3878
3879         /* Convenient shorthand. */
3880         drv_sig_cap = phba->cgn_reg_signal;
3881
3882         /* Choose the least capable frequency. */
3883         if (rsp_sig_freq_cyc > phba->cgn_sig_freq)
3884                 phba->cgn_sig_freq = rsp_sig_freq_cyc;
3885
3886         /* Should be some common signals support. Settle on least capable
3887          * signal and adjust FPIN values. Initialize defaults to ease the
3888          * decision.
3889          */
3890         phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
3891         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
3892         if (rsp_sig_cap == EDC_CG_SIG_WARN_ONLY &&
3893             (drv_sig_cap == EDC_CG_SIG_WARN_ONLY ||
3894              drv_sig_cap == EDC_CG_SIG_WARN_ALARM)) {
3895                 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
3896                 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
3897         }
3898         if (rsp_sig_cap == EDC_CG_SIG_WARN_ALARM) {
3899                 if (drv_sig_cap == EDC_CG_SIG_WARN_ALARM) {
3900                         phba->cgn_reg_signal = EDC_CG_SIG_WARN_ALARM;
3901                         phba->cgn_reg_fpin = LPFC_CGN_FPIN_NONE;
3902                 }
3903                 if (drv_sig_cap == EDC_CG_SIG_WARN_ONLY) {
3904                         phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
3905                         phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
3906                 }
3907         }
3908
3909         /* We are NOT recording signal frequency in congestion info buffer */
3910         return;
3911
3912 out_no_support:
3913         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
3914         phba->cgn_sig_freq = 0;
3915         phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
3916 }
3917
3918 DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag,
3919                         FC_LS_TLV_DTAG_INIT);
3920
3921 /**
3922  * lpfc_cmpl_els_edc - Completion callback function for EDC
3923  * @phba: pointer to lpfc hba data structure.
3924  * @cmdiocb: pointer to lpfc command iocb data structure.
3925  * @rspiocb: pointer to lpfc response iocb data structure.
3926  *
3927  * This routine is the completion callback function for issuing the Exchange
3928  * Diagnostic Capabilities (EDC) command. The driver issues an EDC to
3929  * notify the FPort of its Congestion and Link Fault capabilities.  This
3930  * routine parses the FPort's response and decides on the least common
3931  * values applicable to both FPort and NPort for Warnings and Alarms that
3932  * are communicated via hardware signals.
3933  **/
3934 static void
3935 lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3936                   struct lpfc_iocbq *rspiocb)
3937 {
3938         IOCB_t *irsp_iocb;
3939         struct fc_els_edc_resp *edc_rsp;
3940         struct fc_tlv_desc *tlv;
3941         struct fc_diag_cg_sig_desc *pcgd;
3942         struct fc_diag_lnkflt_desc *plnkflt;
3943         struct lpfc_dmabuf *pcmd, *prsp;
3944         const char *dtag_nm;
3945         u32 *pdata, dtag;
3946         int desc_cnt = 0, bytes_remain;
3947         bool rcv_cap_desc = false;
3948         struct lpfc_nodelist *ndlp;
3949         u32 ulp_status, ulp_word4, tmo, did, iotag;
3950
3951         ndlp = cmdiocb->ndlp;
3952
3953         ulp_status = get_job_ulpstatus(phba, rspiocb);
3954         ulp_word4 = get_job_word4(phba, rspiocb);
3955         did = get_job_els_rsp64_did(phba, rspiocb);
3956
3957         if (phba->sli_rev == LPFC_SLI_REV4) {
3958                 tmo = get_wqe_tmo(rspiocb);
3959                 iotag = get_wqe_reqtag(rspiocb);
3960         } else {
3961                 irsp_iocb = &rspiocb->iocb;
3962                 tmo = irsp_iocb->ulpTimeout;
3963                 iotag = irsp_iocb->ulpIoTag;
3964         }
3965
3966         lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
3967                               "EDC cmpl:    status:x%x/x%x did:x%x",
3968                               ulp_status, ulp_word4, did);
3969
3970         /* ELS cmd tag <ulpIoTag> completes */
3971         lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3972                         "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n",
3973                         iotag, ulp_status, ulp_word4, tmo);
3974
3975         pcmd = cmdiocb->cmd_dmabuf;
3976         if (!pcmd)
3977                 goto out;
3978
3979         pdata = (u32 *)pcmd->virt;
3980         if (!pdata)
3981                 goto out;
3982
3983         /* Need to clear signal values, send features MB and RDF with FPIN. */
3984         if (ulp_status)
3985                 goto out;
3986
3987         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
3988         if (!prsp)
3989                 goto out;
3990
3991         edc_rsp = prsp->virt;
3992         if (!edc_rsp)
3993                 goto out;
3994
3995         /* ELS cmd tag <ulpIoTag> completes */
3996         lpfc_printf_log(phba, KERN_INFO,
3997                         LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
3998                         "4676 Fabric EDC Rsp: "
3999                         "0x%02x, 0x%08x\n",
4000                         edc_rsp->acc_hdr.la_cmd,
4001                         be32_to_cpu(edc_rsp->desc_list_len));
4002
4003         if (!lpfc_is_els_acc_rsp(prsp))
4004                 goto out;
4005
4006         /*
4007          * Payload length in bytes is the response descriptor list
4008          * length minus the 12 bytes of Link Service Request
4009          * Information descriptor in the reply.
4010          */
4011         bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) -
4012                                    sizeof(struct fc_els_lsri_desc);
4013         if (bytes_remain <= 0)
4014                 goto out;
4015
4016         tlv = edc_rsp->desc;
4017
4018         /*
4019          * cycle through EDC diagnostic descriptors to find the
4020          * congestion signaling capability descriptor
4021          */
4022         while (bytes_remain) {
4023                 if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
4024                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
4025                                         "6461 Truncated TLV hdr on "
4026                                         "Diagnostic descriptor[%d]\n",
4027                                         desc_cnt);
4028                         goto out;
4029                 }
4030
4031                 dtag = be32_to_cpu(tlv->desc_tag);
4032                 switch (dtag) {
4033                 case ELS_DTAG_LNK_FAULT_CAP:
4034                         if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
4035                             FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
4036                                         sizeof(struct fc_diag_lnkflt_desc)) {
4037                                 lpfc_printf_log(phba, KERN_WARNING,
4038                                         LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
4039                                         "6462 Truncated Link Fault Diagnostic "
4040                                         "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
4041                                         desc_cnt, bytes_remain,
4042                                         FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
4043                                         sizeof(struct fc_diag_lnkflt_desc));
4044                                 goto out;
4045                         }
4046                         plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
4047                         lpfc_printf_log(phba, KERN_INFO,
4048                                 LOG_ELS | LOG_LDS_EVENT,
4049                                 "4617 Link Fault Desc Data: 0x%08x 0x%08x "
4050                                 "0x%08x 0x%08x 0x%08x\n",
4051                                 be32_to_cpu(plnkflt->desc_tag),
4052                                 be32_to_cpu(plnkflt->desc_len),
4053                                 be32_to_cpu(
4054                                         plnkflt->degrade_activate_threshold),
4055                                 be32_to_cpu(
4056                                         plnkflt->degrade_deactivate_threshold),
4057                                 be32_to_cpu(plnkflt->fec_degrade_interval));
4058                         break;
4059                 case ELS_DTAG_CG_SIGNAL_CAP:
4060                         if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
4061                             FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
4062                                         sizeof(struct fc_diag_cg_sig_desc)) {
4063                                 lpfc_printf_log(
4064                                         phba, KERN_WARNING, LOG_CGN_MGMT,
4065                                         "6463 Truncated Cgn Signal Diagnostic "
4066                                         "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
4067                                         desc_cnt, bytes_remain,
4068                                         FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
4069                                         sizeof(struct fc_diag_cg_sig_desc));
4070                                 goto out;
4071                         }
4072
4073                         pcgd = (struct fc_diag_cg_sig_desc *)tlv;
4074                         lpfc_printf_log(
4075                                 phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4076                                 "4616 CGN Desc Data: 0x%08x 0x%08x "
4077                                 "0x%08x 0x%04x 0x%04x 0x%08x 0x%04x 0x%04x\n",
4078                                 be32_to_cpu(pcgd->desc_tag),
4079                                 be32_to_cpu(pcgd->desc_len),
4080                                 be32_to_cpu(pcgd->xmt_signal_capability),
4081                                 be16_to_cpu(pcgd->xmt_signal_frequency.count),
4082                                 be16_to_cpu(pcgd->xmt_signal_frequency.units),
4083                                 be32_to_cpu(pcgd->rcv_signal_capability),
4084                                 be16_to_cpu(pcgd->rcv_signal_frequency.count),
4085                                 be16_to_cpu(pcgd->rcv_signal_frequency.units));
4086
4087                         /* Compare driver and Fport capabilities and choose
4088                          * least common.
4089                          */
4090                         lpfc_least_capable_settings(phba, pcgd);
4091                         rcv_cap_desc = true;
4092                         break;
4093                 default:
4094                         dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
4095                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
4096                                         "4919 unknown Diagnostic "
4097                                         "Descriptor[%d]: tag x%x (%s)\n",
4098                                         desc_cnt, dtag, dtag_nm);
4099                 }
4100
4101                 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
4102                 tlv = fc_tlv_next_desc(tlv);
4103                 desc_cnt++;
4104         }
4105
4106 out:
4107         if (!rcv_cap_desc) {
4108                 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
4109                 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4110                 phba->cgn_sig_freq = 0;
4111                 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
4112                                 "4202 EDC rsp error - sending RDF "
4113                                 "for FPIN only.\n");
4114         }
4115
4116         lpfc_config_cgn_signal(phba);
4117
4118         /* Check to see if link went down during discovery */
4119         lpfc_els_chk_latt(phba->pport);
4120         lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
4121                               "EDC Cmpl:     did:x%x refcnt %d",
4122                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
4123         lpfc_els_free_iocb(phba, cmdiocb);
4124         lpfc_nlp_put(ndlp);
4125 }
4126
4127 static void
4128 lpfc_format_edc_lft_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
4129 {
4130         struct fc_diag_lnkflt_desc *lft = (struct fc_diag_lnkflt_desc *)tlv;
4131
4132         lft->desc_tag = cpu_to_be32(ELS_DTAG_LNK_FAULT_CAP);
4133         lft->desc_len = cpu_to_be32(
4134                 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_lnkflt_desc));
4135
4136         lft->degrade_activate_threshold =
4137                 cpu_to_be32(phba->degrade_activate_threshold);
4138         lft->degrade_deactivate_threshold =
4139                 cpu_to_be32(phba->degrade_deactivate_threshold);
4140         lft->fec_degrade_interval = cpu_to_be32(phba->fec_degrade_interval);
4141 }
4142
4143 static void
4144 lpfc_format_edc_cgn_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
4145 {
4146         struct fc_diag_cg_sig_desc *cgd = (struct fc_diag_cg_sig_desc *)tlv;
4147
4148         /* We are assuming cgd was zero'ed before calling this routine */
4149
4150         /* Configure the congestion detection capability */
4151         cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP);
4152
4153         /* Descriptor len doesn't include the tag or len fields. */
4154         cgd->desc_len = cpu_to_be32(
4155                 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc));
4156
4157         /* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
4158          * xmt_signal_frequency.count already set to 0.
4159          * xmt_signal_frequency.units already set to 0.
4160          */
4161
4162         if (phba->cmf_active_mode == LPFC_CFG_OFF) {
4163                 /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
4164                  * rcv_signal_frequency.count already set to 0.
4165                  * rcv_signal_frequency.units already set to 0.
4166                  */
4167                 phba->cgn_sig_freq = 0;
4168                 return;
4169         }
4170         switch (phba->cgn_reg_signal) {
4171         case EDC_CG_SIG_WARN_ONLY:
4172                 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY);
4173                 break;
4174         case EDC_CG_SIG_WARN_ALARM:
4175                 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM);
4176                 break;
4177         default:
4178                 /* rcv_signal_capability left 0 thus no support */
4179                 break;
4180         }
4181
4182         /* We start negotiation with lpfc_fabric_cgn_frequency, after
4183          * the completion we settle on the higher frequency.
4184          */
4185         cgd->rcv_signal_frequency.count =
4186                 cpu_to_be16(lpfc_fabric_cgn_frequency);
4187         cgd->rcv_signal_frequency.units =
4188                 cpu_to_be16(EDC_CG_SIGFREQ_MSEC);
4189 }
4190
4191 static bool
4192 lpfc_link_is_lds_capable(struct lpfc_hba *phba)
4193 {
4194         if (!(phba->lmt & LMT_64Gb))
4195                 return false;
4196         if (phba->sli_rev != LPFC_SLI_REV4)
4197                 return false;
4198
4199         if (phba->sli4_hba.conf_trunk) {
4200                 if (phba->trunk_link.phy_lnk_speed == LPFC_USER_LINK_SPEED_64G)
4201                         return true;
4202         } else if (phba->fc_linkspeed == LPFC_LINK_SPEED_64GHZ) {
4203                 return true;
4204         }
4205         return false;
4206 }
4207
4208  /**
4209   * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric.
4210   * @vport: pointer to a host virtual N_Port data structure.
4211   * @retry: retry counter for the command iocb.
4212   *
4213   * This routine issues an ELS EDC to the F-Port Controller to communicate
4214   * this N_Port's support of hardware signals in its Congestion
4215   * Capabilities Descriptor.
4216   *
4217   * Note: This routine does not check if one or more signals are
4218   * set in the cgn_reg_signal parameter.  The caller makes the
4219   * decision to enforce cgn_reg_signal as nonzero or zero depending
4220   * on the conditions.  During Fabric requests, the driver
4221   * requires cgn_reg_signals to be nonzero.  But a dynamic request
4222   * to set the congestion mode to OFF from Monitor or Manage
4223   * would correctly issue an EDC with no signals enabled to
4224   * turn off switch functionality and then update the FW.
4225   *
4226   * Return code
4227   *   0 - Successfully issued edc command
4228   *   1 - Failed to issue edc command
4229   **/
4230 int
4231 lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry)
4232 {
4233         struct lpfc_hba  *phba = vport->phba;
4234         struct lpfc_iocbq *elsiocb;
4235         struct fc_els_edc *edc_req;
4236         struct fc_tlv_desc *tlv;
4237         u16 cmdsize;
4238         struct lpfc_nodelist *ndlp;
4239         u8 *pcmd = NULL;
4240         u32 cgn_desc_size, lft_desc_size;
4241         int rc;
4242
4243         if (vport->port_type == LPFC_NPIV_PORT)
4244                 return -EACCES;
4245
4246         ndlp = lpfc_findnode_did(vport, Fabric_DID);
4247         if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
4248                 return -ENODEV;
4249
4250         cgn_desc_size = (phba->cgn_init_reg_signal) ?
4251                                 sizeof(struct fc_diag_cg_sig_desc) : 0;
4252         lft_desc_size = (lpfc_link_is_lds_capable(phba)) ?
4253                                 sizeof(struct fc_diag_lnkflt_desc) : 0;
4254         cmdsize = cgn_desc_size + lft_desc_size;
4255
4256         /* Skip EDC if no applicable descriptors */
4257         if (!cmdsize)
4258                 goto try_rdf;
4259
4260         cmdsize += sizeof(struct fc_els_edc);
4261         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
4262                                      ndlp->nlp_DID, ELS_CMD_EDC);
4263         if (!elsiocb)
4264                 goto try_rdf;
4265
4266         /* Configure the payload for the supported Diagnostics capabilities. */
4267         pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
4268         memset(pcmd, 0, cmdsize);
4269         edc_req = (struct fc_els_edc *)pcmd;
4270         edc_req->desc_len = cpu_to_be32(cgn_desc_size + lft_desc_size);
4271         edc_req->edc_cmd = ELS_EDC;
4272         tlv = edc_req->desc;
4273
4274         if (cgn_desc_size) {
4275                 lpfc_format_edc_cgn_desc(phba, tlv);
4276                 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
4277                 tlv = fc_tlv_next_desc(tlv);
4278         }
4279
4280         if (lft_desc_size)
4281                 lpfc_format_edc_lft_desc(phba, tlv);
4282
4283         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4284                          "4623 Xmit EDC to remote "
4285                          "NPORT x%x reg_sig x%x reg_fpin:x%x\n",
4286                          ndlp->nlp_DID, phba->cgn_reg_signal,
4287                          phba->cgn_reg_fpin);
4288
4289         elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
4290         elsiocb->ndlp = lpfc_nlp_get(ndlp);
4291         if (!elsiocb->ndlp) {
4292                 lpfc_els_free_iocb(phba, elsiocb);
4293                 return -EIO;
4294         }
4295
4296         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4297                               "Issue EDC:     did:x%x refcnt %d",
4298                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
4299         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4300         if (rc == IOCB_ERROR) {
4301                 /* The additional lpfc_nlp_put will cause the following
4302                  * lpfc_els_free_iocb routine to trigger the rlease of
4303                  * the node.
4304                  */
4305                 lpfc_els_free_iocb(phba, elsiocb);
4306                 lpfc_nlp_put(ndlp);
4307                 goto try_rdf;
4308         }
4309         return 0;
4310 try_rdf:
4311         phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
4312         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4313         rc = lpfc_issue_els_rdf(vport, 0);
4314         return rc;
4315 }
4316
4317 /**
4318  * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
4319  * @vport: pointer to a host virtual N_Port data structure.
4320  * @nlp: pointer to a node-list data structure.
4321  *
4322  * This routine cancels the timer with a delayed IOCB-command retry for
4323  * a @vport's @ndlp. It stops the timer for the delayed function retrial and
4324  * removes the ELS retry event if it presents. In addition, if the
4325  * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
4326  * commands are sent for the @vport's nodes that require issuing discovery
4327  * ADISC.
4328  **/
4329 void
4330 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
4331 {
4332         struct lpfc_work_evt *evtp;
4333
4334         if (!test_and_clear_bit(NLP_DELAY_TMO, &nlp->nlp_flag))
4335                 return;
4336         del_timer_sync(&nlp->nlp_delayfunc);
4337         nlp->nlp_last_elscmd = 0;
4338         if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
4339                 list_del_init(&nlp->els_retry_evt.evt_listp);
4340                 /* Decrement nlp reference count held for the delayed retry */
4341                 evtp = &nlp->els_retry_evt;
4342                 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
4343         }
4344         if (test_and_clear_bit(NLP_NPR_2B_DISC, &nlp->nlp_flag)) {
4345                 if (vport->num_disc_nodes) {
4346                         if (vport->port_state < LPFC_VPORT_READY) {
4347                                 /* Check if there are more ADISCs to be sent */
4348                                 lpfc_more_adisc(vport);
4349                         } else {
4350                                 /* Check if there are more PLOGIs to be sent */
4351                                 lpfc_more_plogi(vport);
4352                                 if (vport->num_disc_nodes == 0) {
4353                                         clear_bit(FC_NDISC_ACTIVE,
4354                                                   &vport->fc_flag);
4355                                         lpfc_can_disctmo(vport);
4356                                         lpfc_end_rscn(vport);
4357                                 }
4358                         }
4359                 }
4360         }
4361         return;
4362 }
4363
4364 /**
4365  * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
4366  * @t: pointer to the timer function associated data (ndlp).
4367  *
4368  * This routine is invoked by the ndlp delayed-function timer to check
4369  * whether there is any pending ELS retry event(s) with the node. If not, it
4370  * simply returns. Otherwise, if there is at least one ELS delayed event, it
4371  * adds the delayed events to the HBA work list and invokes the
4372  * lpfc_worker_wake_up() routine to wake up worker thread to process the
4373  * event. Note that lpfc_nlp_get() is called before posting the event to
4374  * the work list to hold reference count of ndlp so that it guarantees the
4375  * reference to ndlp will still be available when the worker thread gets
4376  * to the event associated with the ndlp.
4377  **/
4378 void
4379 lpfc_els_retry_delay(struct timer_list *t)
4380 {
4381         struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc);
4382         struct lpfc_vport *vport = ndlp->vport;
4383         struct lpfc_hba   *phba = vport->phba;
4384         unsigned long flags;
4385         struct lpfc_work_evt  *evtp = &ndlp->els_retry_evt;
4386
4387         /* Hold a node reference for outstanding queued work */
4388         if (!lpfc_nlp_get(ndlp))
4389                 return;
4390
4391         spin_lock_irqsave(&phba->hbalock, flags);
4392         if (!list_empty(&evtp->evt_listp)) {
4393                 spin_unlock_irqrestore(&phba->hbalock, flags);
4394                 lpfc_nlp_put(ndlp);
4395                 return;
4396         }
4397
4398         evtp->evt_arg1 = ndlp;
4399         evtp->evt = LPFC_EVT_ELS_RETRY;
4400         list_add_tail(&evtp->evt_listp, &phba->work_list);
4401         spin_unlock_irqrestore(&phba->hbalock, flags);
4402
4403         lpfc_worker_wake_up(phba);
4404 }
4405
4406 /**
4407  * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
4408  * @ndlp: pointer to a node-list data structure.
4409  *
4410  * This routine is the worker-thread handler for processing the @ndlp delayed
4411  * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
4412  * the last ELS command from the associated ndlp and invokes the proper ELS
4413  * function according to the delayed ELS command to retry the command.
4414  **/
4415 void
4416 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
4417 {
4418         struct lpfc_vport *vport = ndlp->vport;
4419         uint32_t cmd, retry;
4420
4421         spin_lock_irq(&ndlp->lock);
4422         cmd = ndlp->nlp_last_elscmd;
4423         ndlp->nlp_last_elscmd = 0;
4424         spin_unlock_irq(&ndlp->lock);
4425
4426         if (!test_and_clear_bit(NLP_DELAY_TMO, &ndlp->nlp_flag))
4427                 return;
4428
4429         /*
4430          * If a discovery event readded nlp_delayfunc after timer
4431          * firing and before processing the timer, cancel the
4432          * nlp_delayfunc.
4433          */
4434         del_timer_sync(&ndlp->nlp_delayfunc);
4435         retry = ndlp->nlp_retry;
4436         ndlp->nlp_retry = 0;
4437
4438         switch (cmd) {
4439         case ELS_CMD_FLOGI:
4440                 lpfc_issue_els_flogi(vport, ndlp, retry);
4441                 break;
4442         case ELS_CMD_PLOGI:
4443                 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
4444                         ndlp->nlp_prev_state = ndlp->nlp_state;
4445                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4446                 }
4447                 break;
4448         case ELS_CMD_ADISC:
4449                 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
4450                         ndlp->nlp_prev_state = ndlp->nlp_state;
4451                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
4452                 }
4453                 break;
4454         case ELS_CMD_PRLI:
4455         case ELS_CMD_NVMEPRLI:
4456                 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
4457                         ndlp->nlp_prev_state = ndlp->nlp_state;
4458                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
4459                 }
4460                 break;
4461         case ELS_CMD_LOGO:
4462                 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
4463                         ndlp->nlp_prev_state = ndlp->nlp_state;
4464                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
4465                 }
4466                 break;
4467         case ELS_CMD_FDISC:
4468                 if (!test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag))
4469                         lpfc_issue_els_fdisc(vport, ndlp, retry);
4470                 break;
4471         }
4472         return;
4473 }
4474
4475 /**
4476  * lpfc_link_reset - Issue link reset
4477  * @vport: pointer to a virtual N_Port data structure.
4478  *
4479  * This routine performs link reset by sending INIT_LINK mailbox command.
4480  * For SLI-3 adapter, link attention interrupt is enabled before issuing
4481  * INIT_LINK mailbox command.
4482  *
4483  * Return code
4484  *   0 - Link reset initiated successfully
4485  *   1 - Failed to initiate link reset
4486  **/
4487 int
4488 lpfc_link_reset(struct lpfc_vport *vport)
4489 {
4490         struct lpfc_hba *phba = vport->phba;
4491         LPFC_MBOXQ_t *mbox;
4492         uint32_t control;
4493         int rc;
4494
4495         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4496                          "2851 Attempt link reset\n");
4497         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4498         if (!mbox) {
4499                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4500                                 "2852 Failed to allocate mbox memory");
4501                 return 1;
4502         }
4503
4504         /* Enable Link attention interrupts */
4505         if (phba->sli_rev <= LPFC_SLI_REV3) {
4506                 spin_lock_irq(&phba->hbalock);
4507                 phba->sli.sli_flag |= LPFC_PROCESS_LA;
4508                 control = readl(phba->HCregaddr);
4509                 control |= HC_LAINT_ENA;
4510                 writel(control, phba->HCregaddr);
4511                 readl(phba->HCregaddr); /* flush */
4512                 spin_unlock_irq(&phba->hbalock);
4513         }
4514
4515         lpfc_init_link(phba, mbox, phba->cfg_topology,
4516                        phba->cfg_link_speed);
4517         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4518         mbox->vport = vport;
4519         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4520         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
4521                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4522                                 "2853 Failed to issue INIT_LINK "
4523                                 "mbox command, rc:x%x\n", rc);
4524                 mempool_free(mbox, phba->mbox_mem_pool);
4525                 return 1;
4526         }
4527
4528         return 0;
4529 }
4530
4531 /**
4532  * lpfc_els_retry - Make retry decision on an els command iocb
4533  * @phba: pointer to lpfc hba data structure.
4534  * @cmdiocb: pointer to lpfc command iocb data structure.
4535  * @rspiocb: pointer to lpfc response iocb data structure.
4536  *
4537  * This routine makes a retry decision on an ELS command IOCB, which has
4538  * failed. The following ELS IOCBs use this function for retrying the command
4539  * when previously issued command responsed with error status: FLOGI, PLOGI,
4540  * PRLI, ADISC and FDISC. Based on the ELS command type and the
4541  * returned error status, it makes the decision whether a retry shall be
4542  * issued for the command, and whether a retry shall be made immediately or
4543  * delayed. In the former case, the corresponding ELS command issuing-function
4544  * is called to retry the command. In the later case, the ELS command shall
4545  * be posted to the ndlp delayed event and delayed function timer set to the
4546  * ndlp for the delayed command issusing.
4547  *
4548  * Return code
4549  *   0 - No retry of els command is made
4550  *   1 - Immediate or delayed retry of els command is made
4551  **/
4552 static int
4553 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
4554                struct lpfc_iocbq *rspiocb)
4555 {
4556         struct lpfc_vport *vport = cmdiocb->vport;
4557         union lpfc_wqe128 *irsp = &rspiocb->wqe;
4558         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
4559         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
4560         uint32_t *elscmd;
4561         struct ls_rjt stat;
4562         int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
4563         int logerr = 0;
4564         uint32_t cmd = 0;
4565         uint32_t did;
4566         int link_reset = 0, rc;
4567         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
4568         u32 ulp_word4 = get_job_word4(phba, rspiocb);
4569         u8 rsn_code_exp = 0;
4570
4571
4572         /* Note: cmd_dmabuf may be 0 for internal driver abort
4573          * of delays ELS command.
4574          */
4575
4576         if (pcmd && pcmd->virt) {
4577                 elscmd = (uint32_t *) (pcmd->virt);
4578                 cmd = *elscmd++;
4579         }
4580
4581         if (ndlp)
4582                 did = ndlp->nlp_DID;
4583         else {
4584                 /* We should only hit this case for retrying PLOGI */
4585                 did = get_job_els_rsp64_did(phba, rspiocb);
4586                 ndlp = lpfc_findnode_did(vport, did);
4587                 if (!ndlp && (cmd != ELS_CMD_PLOGI))
4588                         return 0;
4589         }
4590
4591         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4592                 "Retry ELS:       wd7:x%x wd4:x%x did:x%x",
4593                 *(((uint32_t *)irsp) + 7), ulp_word4, did);
4594
4595         switch (ulp_status) {
4596         case IOSTAT_FCP_RSP_ERROR:
4597                 break;
4598         case IOSTAT_REMOTE_STOP:
4599                 if (phba->sli_rev == LPFC_SLI_REV4) {
4600                         /* This IO was aborted by the target, we don't
4601                          * know the rxid and because we did not send the
4602                          * ABTS we cannot generate and RRQ.
4603                          */
4604                         lpfc_set_rrq_active(phba, ndlp,
4605                                          cmdiocb->sli4_lxritag, 0, 0);
4606                 }
4607                 break;
4608         case IOSTAT_LOCAL_REJECT:
4609                 switch ((ulp_word4 & IOERR_PARAM_MASK)) {
4610                 case IOERR_LOOP_OPEN_FAILURE:
4611                         if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
4612                                 delay = 1000;
4613                         retry = 1;
4614                         break;
4615
4616                 case IOERR_ILLEGAL_COMMAND:
4617                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4618                                          "0124 Retry illegal cmd x%x "
4619                                          "retry:x%x delay:x%x\n",
4620                                          cmd, cmdiocb->retry, delay);
4621                         retry = 1;
4622                         /* All command's retry policy */
4623                         maxretry = 8;
4624                         if (cmdiocb->retry > 2)
4625                                 delay = 1000;
4626                         break;
4627
4628                 case IOERR_NO_RESOURCES:
4629                         logerr = 1; /* HBA out of resources */
4630                         retry = 1;
4631                         if (cmdiocb->retry > 100)
4632                                 delay = 100;
4633                         maxretry = 250;
4634                         break;
4635
4636                 case IOERR_ILLEGAL_FRAME:
4637                         delay = 100;
4638                         retry = 1;
4639                         break;
4640
4641                 case IOERR_INVALID_RPI:
4642                         if (cmd == ELS_CMD_PLOGI &&
4643                             did == NameServer_DID) {
4644                                 /* Continue forever if plogi to */
4645                                 /* the nameserver fails */
4646                                 maxretry = 0;
4647                                 delay = 100;
4648                         } else if (cmd == ELS_CMD_PRLI &&
4649                                    ndlp->nlp_state != NLP_STE_PRLI_ISSUE) {
4650                                 /* State-command disagreement.  The PRLI was
4651                                  * failed with an invalid rpi meaning there
4652                                  * some unexpected state change.  Don't retry.
4653                                  */
4654                                 maxretry = 0;
4655                                 retry = 0;
4656                                 break;
4657                         }
4658                         retry = 1;
4659                         break;
4660
4661                 case IOERR_SEQUENCE_TIMEOUT:
4662                         if (cmd == ELS_CMD_PLOGI &&
4663                             did == NameServer_DID &&
4664                             (cmdiocb->retry + 1) == maxretry) {
4665                                 /* Reset the Link */
4666                                 link_reset = 1;
4667                                 break;
4668                         }
4669                         retry = 1;
4670                         delay = 100;
4671                         break;
4672                 case IOERR_SLI_ABORTED:
4673                         /* Retry ELS PLOGI command?
4674                          * Possibly the rport just wasn't ready.
4675                          */
4676                         if (cmd == ELS_CMD_PLOGI) {
4677                                 /* No retry if state change */
4678                                 if (ndlp &&
4679                                     ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
4680                                         goto out_retry;
4681                                 retry = 1;
4682                                 maxretry = 2;
4683                         }
4684                         break;
4685                 }
4686                 break;
4687
4688         case IOSTAT_NPORT_RJT:
4689         case IOSTAT_FABRIC_RJT:
4690                 if (ulp_word4 & RJT_UNAVAIL_TEMP) {
4691                         retry = 1;
4692                         break;
4693                 }
4694                 break;
4695
4696         case IOSTAT_NPORT_BSY:
4697         case IOSTAT_FABRIC_BSY:
4698                 logerr = 1; /* Fabric / Remote NPort out of resources */
4699                 retry = 1;
4700                 break;
4701
4702         case IOSTAT_LS_RJT:
4703                 stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
4704                 /* Added for Vendor specifc support
4705                  * Just keep retrying for these Rsn / Exp codes
4706                  */
4707                 if (test_bit(FC_PT2PT, &vport->fc_flag) &&
4708                     cmd == ELS_CMD_NVMEPRLI) {
4709                         switch (stat.un.b.lsRjtRsnCode) {
4710                         case LSRJT_UNABLE_TPC:
4711                         case LSRJT_INVALID_CMD:
4712                         case LSRJT_LOGICAL_ERR:
4713                         case LSRJT_CMD_UNSUPPORTED:
4714                                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
4715                                                  "0168 NVME PRLI LS_RJT "
4716                                                  "reason %x port doesn't "
4717                                                  "support NVME, disabling NVME\n",
4718                                                  stat.un.b.lsRjtRsnCode);
4719                                 retry = 0;
4720                                 set_bit(FC_PT2PT_NO_NVME, &vport->fc_flag);
4721                                 goto out_retry;
4722                         }
4723                 }
4724                 switch (stat.un.b.lsRjtRsnCode) {
4725                 case LSRJT_UNABLE_TPC:
4726                         /* Special case for PRLI LS_RJTs. Recall that lpfc
4727                          * uses a single routine to issue both PRLI FC4 types.
4728                          * If the PRLI is rejected because that FC4 type
4729                          * isn't really supported, don't retry and cause
4730                          * multiple transport registrations.  Otherwise, parse
4731                          * the reason code/reason code explanation and take the
4732                          * appropriate action.
4733                          */
4734                         lpfc_printf_vlog(vport, KERN_INFO,
4735                                          LOG_DISCOVERY | LOG_ELS | LOG_NODE,
4736                                          "0153 ELS cmd x%x LS_RJT by x%x. "
4737                                          "RsnCode x%x RsnCodeExp x%x\n",
4738                                          cmd, did, stat.un.b.lsRjtRsnCode,
4739                                          stat.un.b.lsRjtRsnCodeExp);
4740
4741                         switch (stat.un.b.lsRjtRsnCodeExp) {
4742                         case LSEXP_CANT_GIVE_DATA:
4743                         case LSEXP_CMD_IN_PROGRESS:
4744                                 if (cmd == ELS_CMD_PLOGI) {
4745                                         delay = 1000;
4746                                         maxretry = 48;
4747                                 }
4748                                 retry = 1;
4749                                 break;
4750                         case LSEXP_REQ_UNSUPPORTED:
4751                         case LSEXP_NO_RSRC_ASSIGN:
4752                                 /* These explanation codes get no retry. */
4753                                 if (cmd == ELS_CMD_PRLI ||
4754                                     cmd == ELS_CMD_NVMEPRLI)
4755                                         break;
4756                                 fallthrough;
4757                         default:
4758                                 /* Limit the delay and retry action to a limited
4759                                  * cmd set.  There are other ELS commands where
4760                                  * a retry is not expected.
4761                                  */
4762                                 if (cmd == ELS_CMD_PLOGI ||
4763                                     cmd == ELS_CMD_PRLI ||
4764                                     cmd == ELS_CMD_NVMEPRLI) {
4765                                         delay = 1000;
4766                                         maxretry = lpfc_max_els_tries + 1;
4767                                         retry = 1;
4768                                 }
4769                                 break;
4770                         }
4771
4772                         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4773                           (cmd == ELS_CMD_FDISC) &&
4774                           (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
4775                                 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
4776                                               "0125 FDISC (x%x). "
4777                                               "Fabric out of resources\n",
4778                                               stat.un.lsRjtError);
4779                                 lpfc_vport_set_state(vport,
4780                                                      FC_VPORT_NO_FABRIC_RSCS);
4781                         }
4782                         break;
4783
4784                 case LSRJT_LOGICAL_BSY:
4785                         rsn_code_exp = stat.un.b.lsRjtRsnCodeExp;
4786                         if ((cmd == ELS_CMD_PLOGI) ||
4787                             (cmd == ELS_CMD_PRLI) ||
4788                             (cmd == ELS_CMD_NVMEPRLI)) {
4789                                 delay = 1000;
4790                                 maxretry = 48;
4791
4792                                 /* An authentication LS_RJT reason code
4793                                  * explanation means some error in the
4794                                  * security settings end-to-end.  Reduce
4795                                  * the retry count to allow lpfc to clear
4796                                  * RSCN mode and not race with dev_loss.
4797                                  */
4798                                 if (cmd == ELS_CMD_PLOGI &&
4799                                     rsn_code_exp == LSEXP_AUTH_REQ)
4800                                         maxretry = 8;
4801                         } else if (cmd == ELS_CMD_FDISC) {
4802                                 /* FDISC retry policy */
4803                                 maxretry = 48;
4804                                 if (cmdiocb->retry >= 32)
4805                                         delay = 1000;
4806                         }
4807                         retry = 1;
4808                         break;
4809
4810                 case LSRJT_LOGICAL_ERR:
4811                         /* There are some cases where switches return this
4812                          * error when they are not ready and should be returning
4813                          * Logical Busy. We should delay every time.
4814                          */
4815                         if (cmd == ELS_CMD_FDISC &&
4816                             stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
4817                                 maxretry = 3;
4818                                 delay = 1000;
4819                                 retry = 1;
4820                         } else if (cmd == ELS_CMD_FLOGI &&
4821                                    stat.un.b.lsRjtRsnCodeExp ==
4822                                                 LSEXP_NOTHING_MORE) {
4823                                 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
4824                                 retry = 1;
4825                                 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
4826                                               "0820 FLOGI (x%x). "
4827                                               "BBCredit Not Supported\n",
4828                                               stat.un.lsRjtError);
4829                         } else if (cmd == ELS_CMD_PLOGI) {
4830                                 rsn_code_exp = stat.un.b.lsRjtRsnCodeExp;
4831
4832                                 /* An authentication LS_RJT reason code
4833                                  * explanation means some error in the
4834                                  * security settings end-to-end.  Reduce
4835                                  * the retry count to allow lpfc to clear
4836                                  * RSCN mode and not race with dev_loss.
4837                                  */
4838                                 if (rsn_code_exp == LSEXP_AUTH_REQ) {
4839                                         delay = 1000;
4840                                         retry = 1;
4841                                         maxretry = 8;
4842                                 }
4843                         }
4844                         break;
4845
4846                 case LSRJT_PROTOCOL_ERR:
4847                         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4848                           (cmd == ELS_CMD_FDISC) &&
4849                           ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
4850                           (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
4851                           ) {
4852                                 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
4853                                               "0122 FDISC (x%x). "
4854                                               "Fabric Detected Bad WWN\n",
4855                                               stat.un.lsRjtError);
4856                                 lpfc_vport_set_state(vport,
4857                                                      FC_VPORT_FABRIC_REJ_WWN);
4858                         }
4859                         break;
4860                 case LSRJT_VENDOR_UNIQUE:
4861                         if ((stat.un.b.vendorUnique == 0x45) &&
4862                             (cmd == ELS_CMD_FLOGI)) {
4863                                 goto out_retry;
4864                         }
4865                         break;
4866                 case LSRJT_CMD_UNSUPPORTED:
4867                         /* lpfc nvmet returns this type of LS_RJT when it
4868                          * receives an FCP PRLI because lpfc nvmet only
4869                          * support NVME.  ELS request is terminated for FCP4
4870                          * on this rport.
4871                          */
4872                         if (stat.un.b.lsRjtRsnCodeExp ==
4873                             LSEXP_REQ_UNSUPPORTED) {
4874                                 if (cmd == ELS_CMD_PRLI)
4875                                         goto out_retry;
4876                         }
4877                         break;
4878                 }
4879                 break;
4880
4881         case IOSTAT_INTERMED_RSP:
4882         case IOSTAT_BA_RJT:
4883                 break;
4884
4885         default:
4886                 break;
4887         }
4888
4889         if (link_reset) {
4890                 rc = lpfc_link_reset(vport);
4891                 if (rc) {
4892                         /* Do not give up. Retry PLOGI one more time and attempt
4893                          * link reset if PLOGI fails again.
4894                          */
4895                         retry = 1;
4896                         delay = 100;
4897                         goto out_retry;
4898                 }
4899                 return 1;
4900         }
4901
4902         if (did == FDMI_DID)
4903                 retry = 1;
4904
4905         if ((cmd == ELS_CMD_FLOGI) &&
4906             (phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
4907             !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
4908                 /* FLOGI retry policy */
4909                 retry = 1;
4910                 /* retry FLOGI forever */
4911                 if (phba->link_flag != LS_LOOPBACK_MODE)
4912                         maxretry = 0;
4913                 else
4914                         maxretry = 2;
4915
4916                 if (cmdiocb->retry >= 100)
4917                         delay = 5000;
4918                 else if (cmdiocb->retry >= 32)
4919                         delay = 1000;
4920         } else if ((cmd == ELS_CMD_FDISC) &&
4921             !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
4922                 /* retry FDISCs every second up to devloss */
4923                 retry = 1;
4924                 maxretry = vport->cfg_devloss_tmo;
4925                 delay = 1000;
4926         }
4927
4928         cmdiocb->retry++;
4929         if (maxretry && (cmdiocb->retry >= maxretry)) {
4930                 phba->fc_stat.elsRetryExceeded++;
4931                 retry = 0;
4932         }
4933
4934         if (test_bit(FC_UNLOADING, &vport->load_flag))
4935                 retry = 0;
4936
4937 out_retry:
4938         if (retry) {
4939                 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
4940                         /* Stop retrying PLOGI and FDISC if in FCF discovery */
4941                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
4942                                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4943                                                  "2849 Stop retry ELS command "
4944                                                  "x%x to remote NPORT x%x, "
4945                                                  "Data: x%x x%x\n", cmd, did,
4946                                                  cmdiocb->retry, delay);
4947                                 return 0;
4948                         }
4949                 }
4950
4951                 /* Retry ELS command <elsCmd> to remote NPORT <did> */
4952                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4953                                  "0107 Retry ELS command x%x to remote "
4954                                  "NPORT x%x Data: x%x x%x\n",
4955                                  cmd, did, cmdiocb->retry, delay);
4956
4957                 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
4958                         ((ulp_status != IOSTAT_LOCAL_REJECT) ||
4959                         ((ulp_word4 & IOERR_PARAM_MASK) !=
4960                         IOERR_NO_RESOURCES))) {
4961                         /* Don't reset timer for no resources */
4962
4963                         /* If discovery / RSCN timer is running, reset it */
4964                         if (timer_pending(&vport->fc_disctmo) ||
4965                             test_bit(FC_RSCN_MODE, &vport->fc_flag))
4966                                 lpfc_set_disctmo(vport);
4967                 }
4968
4969                 phba->fc_stat.elsXmitRetry++;
4970                 if (ndlp && delay) {
4971                         phba->fc_stat.elsDelayRetry++;
4972                         ndlp->nlp_retry = cmdiocb->retry;
4973
4974                         /* delay is specified in milliseconds */
4975                         mod_timer(&ndlp->nlp_delayfunc,
4976                                 jiffies + msecs_to_jiffies(delay));
4977                         set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
4978
4979                         ndlp->nlp_prev_state = ndlp->nlp_state;
4980                         if ((cmd == ELS_CMD_PRLI) ||
4981                             (cmd == ELS_CMD_NVMEPRLI))
4982                                 lpfc_nlp_set_state(vport, ndlp,
4983                                         NLP_STE_PRLI_ISSUE);
4984                         else if (cmd != ELS_CMD_ADISC)
4985                                 lpfc_nlp_set_state(vport, ndlp,
4986                                         NLP_STE_NPR_NODE);
4987                         ndlp->nlp_last_elscmd = cmd;
4988
4989                         return 1;
4990                 }
4991                 switch (cmd) {
4992                 case ELS_CMD_FLOGI:
4993                         lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
4994                         return 1;
4995                 case ELS_CMD_FDISC:
4996                         lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
4997                         return 1;
4998                 case ELS_CMD_PLOGI:
4999                         if (ndlp) {
5000                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5001                                 lpfc_nlp_set_state(vport, ndlp,
5002                                                    NLP_STE_PLOGI_ISSUE);
5003                         }
5004                         lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
5005                         return 1;
5006                 case ELS_CMD_ADISC:
5007                         ndlp->nlp_prev_state = ndlp->nlp_state;
5008                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
5009                         lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
5010                         return 1;
5011                 case ELS_CMD_PRLI:
5012                 case ELS_CMD_NVMEPRLI:
5013                         ndlp->nlp_prev_state = ndlp->nlp_state;
5014                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
5015                         lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
5016                         return 1;
5017                 case ELS_CMD_LOGO:
5018                         ndlp->nlp_prev_state = ndlp->nlp_state;
5019                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
5020                         lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
5021                         return 1;
5022                 }
5023         }
5024         /* No retry ELS command <elsCmd> to remote NPORT <did> */
5025         if (logerr) {
5026                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5027                          "0137 No retry ELS command x%x to remote "
5028                          "NPORT x%x: Out of Resources: Error:x%x/%x "
5029                          "IoTag x%x\n",
5030                          cmd, did, ulp_status, ulp_word4,
5031                          cmdiocb->iotag);
5032         }
5033         else {
5034                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5035                                  "0108 No retry ELS command x%x to remote "
5036                                  "NPORT x%x Retried:%d Error:x%x/%x "
5037                                  "IoTag x%x nflags x%lx\n",
5038                                  cmd, did, cmdiocb->retry, ulp_status,
5039                                  ulp_word4, cmdiocb->iotag,
5040                                  (ndlp ? ndlp->nlp_flag : 0));
5041         }
5042         return 0;
5043 }
5044
5045 /**
5046  * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
5047  * @phba: pointer to lpfc hba data structure.
5048  * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
5049  *
5050  * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
5051  * associated with a command IOCB back to the lpfc DMA buffer pool. It first
5052  * checks to see whether there is a lpfc DMA buffer associated with the
5053  * response of the command IOCB. If so, it will be released before releasing
5054  * the lpfc DMA buffer associated with the IOCB itself.
5055  *
5056  * Return code
5057  *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
5058  **/
5059 static int
5060 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
5061 {
5062         struct lpfc_dmabuf *buf_ptr;
5063
5064         /* Free the response before processing the command. */
5065         if (!list_empty(&buf_ptr1->list)) {
5066                 list_remove_head(&buf_ptr1->list, buf_ptr,
5067                                  struct lpfc_dmabuf,
5068                                  list);
5069                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
5070                 kfree(buf_ptr);
5071         }
5072         lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
5073         kfree(buf_ptr1);
5074         return 0;
5075 }
5076
5077 /**
5078  * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
5079  * @phba: pointer to lpfc hba data structure.
5080  * @buf_ptr: pointer to the lpfc dma buffer data structure.
5081  *
5082  * This routine releases the lpfc Direct Memory Access (DMA) buffer
5083  * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
5084  * pool.
5085  *
5086  * Return code
5087  *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
5088  **/
5089 static int
5090 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
5091 {
5092         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
5093         kfree(buf_ptr);
5094         return 0;
5095 }
5096
5097 /**
5098  * lpfc_els_free_iocb - Free a command iocb and its associated resources
5099  * @phba: pointer to lpfc hba data structure.
5100  * @elsiocb: pointer to lpfc els command iocb data structure.
5101  *
5102  * This routine frees a command IOCB and its associated resources. The
5103  * command IOCB data structure contains the reference to various associated
5104  * resources, these fields must be set to NULL if the associated reference
5105  * not present:
5106  *   cmd_dmabuf - reference to cmd.
5107  *   cmd_dmabuf->next - reference to rsp
5108  *   rsp_dmabuf - unused
5109  *   bpl_dmabuf - reference to bpl
5110  *
5111  * It first properly decrements the reference count held on ndlp for the
5112  * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
5113  * set, it invokes the lpfc_els_free_data() routine to release the Direct
5114  * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
5115  * adds the DMA buffer the @phba data structure for the delayed release.
5116  * If reference to the Buffer Pointer List (BPL) is present, the
5117  * lpfc_els_free_bpl() routine is invoked to release the DMA memory
5118  * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
5119  * invoked to release the IOCB data structure back to @phba IOCBQ list.
5120  *
5121  * Return code
5122  *   0 - Success (currently, always return 0)
5123  **/
5124 int
5125 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
5126 {
5127         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
5128
5129         /* The I/O iocb is complete.  Clear the node and first dmbuf */
5130         elsiocb->ndlp = NULL;
5131
5132         /* cmd_dmabuf = cmd,  cmd_dmabuf->next = rsp, bpl_dmabuf = bpl */
5133         if (elsiocb->cmd_dmabuf) {
5134                 if (elsiocb->cmd_flag & LPFC_DELAY_MEM_FREE) {
5135                         /* Firmware could still be in progress of DMAing
5136                          * payload, so don't free data buffer till after
5137                          * a hbeat.
5138                          */
5139                         elsiocb->cmd_flag &= ~LPFC_DELAY_MEM_FREE;
5140                         buf_ptr = elsiocb->cmd_dmabuf;
5141                         elsiocb->cmd_dmabuf = NULL;
5142                         if (buf_ptr) {
5143                                 buf_ptr1 = NULL;
5144                                 spin_lock_irq(&phba->hbalock);
5145                                 if (!list_empty(&buf_ptr->list)) {
5146                                         list_remove_head(&buf_ptr->list,
5147                                                 buf_ptr1, struct lpfc_dmabuf,
5148                                                 list);
5149                                         INIT_LIST_HEAD(&buf_ptr1->list);
5150                                         list_add_tail(&buf_ptr1->list,
5151                                                 &phba->elsbuf);
5152                                         phba->elsbuf_cnt++;
5153                                 }
5154                                 INIT_LIST_HEAD(&buf_ptr->list);
5155                                 list_add_tail(&buf_ptr->list, &phba->elsbuf);
5156                                 phba->elsbuf_cnt++;
5157                                 spin_unlock_irq(&phba->hbalock);
5158                         }
5159                 } else {
5160                         buf_ptr1 = elsiocb->cmd_dmabuf;
5161                         lpfc_els_free_data(phba, buf_ptr1);
5162                         elsiocb->cmd_dmabuf = NULL;
5163                 }
5164         }
5165
5166         if (elsiocb->bpl_dmabuf) {
5167                 buf_ptr = elsiocb->bpl_dmabuf;
5168                 lpfc_els_free_bpl(phba, buf_ptr);
5169                 elsiocb->bpl_dmabuf = NULL;
5170         }
5171         lpfc_sli_release_iocbq(phba, elsiocb);
5172         return 0;
5173 }
5174
5175 /**
5176  * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
5177  * @phba: pointer to lpfc hba data structure.
5178  * @cmdiocb: pointer to lpfc command iocb data structure.
5179  * @rspiocb: pointer to lpfc response iocb data structure.
5180  *
5181  * This routine is the completion callback function to the Logout (LOGO)
5182  * Accept (ACC) Response ELS command. This routine is invoked to indicate
5183  * the completion of the LOGO process. If the node has transitioned to NPR,
5184  * this routine unregisters the RPI if it is still registered. The
5185  * lpfc_els_free_iocb() is invoked to release the IOCB data structure.
5186  **/
5187 static void
5188 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
5189                        struct lpfc_iocbq *rspiocb)
5190 {
5191         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
5192         struct lpfc_vport *vport = cmdiocb->vport;
5193         u32 ulp_status, ulp_word4;
5194
5195         ulp_status = get_job_ulpstatus(phba, rspiocb);
5196         ulp_word4 = get_job_word4(phba, rspiocb);
5197
5198         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5199                 "ACC LOGO cmpl:   status:x%x/x%x did:x%x",
5200                 ulp_status, ulp_word4, ndlp->nlp_DID);
5201         /* ACC to LOGO completes to NPort <nlp_DID> */
5202         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5203                          "0109 ACC to LOGO completes to NPort x%x refcnt %d "
5204                          "last els x%x Data: x%lx x%x x%x\n",
5205                          ndlp->nlp_DID, kref_read(&ndlp->kref),
5206                          ndlp->nlp_last_elscmd, ndlp->nlp_flag, ndlp->nlp_state,
5207                          ndlp->nlp_rpi);
5208
5209         /* This clause allows the LOGO ACC to complete and free resources
5210          * for the Fabric Domain Controller.  It does deliberately skip
5211          * the unreg_rpi and release rpi because some fabrics send RDP
5212          * requests after logging out from the initiator.
5213          */
5214         if (ndlp->nlp_type & NLP_FABRIC &&
5215             ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
5216                 goto out;
5217
5218         if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
5219                 if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag))
5220                         lpfc_unreg_rpi(vport, ndlp);
5221
5222                 /* If came from PRLO, then PRLO_ACC is done.
5223                  * Start rediscovery now.
5224                  */
5225                 if (ndlp->nlp_last_elscmd == ELS_CMD_PRLO) {
5226                         set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
5227                         ndlp->nlp_prev_state = ndlp->nlp_state;
5228                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
5229                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5230                 }
5231         }
5232
5233  out:
5234         /*
5235          * The driver received a LOGO from the rport and has ACK'd it.
5236          * At this point, the driver is done so release the IOCB
5237          */
5238         lpfc_els_free_iocb(phba, cmdiocb);
5239         lpfc_nlp_put(ndlp);
5240 }
5241
5242 /**
5243  * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
5244  * @phba: pointer to lpfc hba data structure.
5245  * @pmb: pointer to the driver internal queue element for mailbox command.
5246  *
5247  * This routine is the completion callback function for unregister default
5248  * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
5249  * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
5250  * decrements the ndlp reference count held for this completion callback
5251  * function. After that, it invokes the lpfc_drop_node to check
5252  * whether it is appropriate to release the node.
5253  **/
5254 void
5255 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5256 {
5257         struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
5258         u32 mbx_flag = pmb->mbox_flag;
5259         u32 mbx_cmd = pmb->u.mb.mbxCommand;
5260
5261         if (ndlp) {
5262                 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5263                                  "0006 rpi x%x DID:%x flg:%lx %d x%px "
5264                                  "mbx_cmd x%x mbx_flag x%x x%px\n",
5265                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5266                                  kref_read(&ndlp->kref), ndlp, mbx_cmd,
5267                                  mbx_flag, pmb);
5268
5269                 /* This ends the default/temporary RPI cleanup logic for this
5270                  * ndlp and the node and rpi needs to be released. Free the rpi
5271                  * first on an UNREG_LOGIN and then release the final
5272                  * references.
5273                  */
5274                 clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
5275                 if (mbx_cmd == MBX_UNREG_LOGIN)
5276                         clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5277                 lpfc_nlp_put(ndlp);
5278                 lpfc_drop_node(ndlp->vport, ndlp);
5279         }
5280
5281         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
5282 }
5283
5284 /**
5285  * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
5286  * @phba: pointer to lpfc hba data structure.
5287  * @cmdiocb: pointer to lpfc command iocb data structure.
5288  * @rspiocb: pointer to lpfc response iocb data structure.
5289  *
5290  * This routine is the completion callback function for ELS Response IOCB
5291  * command. In normal case, this callback function just properly sets the
5292  * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
5293  * field in the command IOCB is not NULL, the referred mailbox command will
5294  * be send out, and then invokes the lpfc_els_free_iocb() routine to release
5295  * the IOCB.
5296  **/
5297 static void
5298 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
5299                   struct lpfc_iocbq *rspiocb)
5300 {
5301         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
5302         struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
5303         struct Scsi_Host  *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
5304         IOCB_t  *irsp;
5305         LPFC_MBOXQ_t *mbox = NULL;
5306         u32 ulp_status, ulp_word4, tmo, did, iotag;
5307
5308         if (!vport) {
5309                 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
5310                                 "3177 null vport in ELS rsp\n");
5311                 goto out;
5312         }
5313         if (cmdiocb->context_un.mbox)
5314                 mbox = cmdiocb->context_un.mbox;
5315
5316         ulp_status = get_job_ulpstatus(phba, rspiocb);
5317         ulp_word4 = get_job_word4(phba, rspiocb);
5318         did = get_job_els_rsp64_did(phba, cmdiocb);
5319
5320         if (phba->sli_rev == LPFC_SLI_REV4) {
5321                 tmo = get_wqe_tmo(cmdiocb);
5322                 iotag = get_wqe_reqtag(cmdiocb);
5323         } else {
5324                 irsp = &rspiocb->iocb;
5325                 tmo = irsp->ulpTimeout;
5326                 iotag = irsp->ulpIoTag;
5327         }
5328
5329         /* Check to see if link went down during discovery */
5330         if (!ndlp || lpfc_els_chk_latt(vport)) {
5331                 if (mbox)
5332                         lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
5333                 goto out;
5334         }
5335
5336         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5337                 "ELS rsp cmpl:    status:x%x/x%x did:x%x",
5338                 ulp_status, ulp_word4, did);
5339         /* ELS response tag <ulpIoTag> completes */
5340         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5341                          "0110 ELS response tag x%x completes "
5342                          "Data: x%x x%x x%x x%x x%lx x%x x%x x%x %p %p\n",
5343                          iotag, ulp_status, ulp_word4, tmo,
5344                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5345                          ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox, ndlp);
5346         if (mbox) {
5347                 if (ulp_status == 0 &&
5348                     test_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag)) {
5349                         if (!lpfc_unreg_rpi(vport, ndlp) &&
5350                             !test_bit(FC_PT2PT, &vport->fc_flag)) {
5351                                 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5352                                     ndlp->nlp_state ==
5353                                      NLP_STE_REG_LOGIN_ISSUE) {
5354                                         lpfc_printf_vlog(vport, KERN_INFO,
5355                                                          LOG_DISCOVERY,
5356                                                          "0314 PLOGI recov "
5357                                                          "DID x%x "
5358                                                          "Data: x%x x%x x%lx\n",
5359                                                          ndlp->nlp_DID,
5360                                                          ndlp->nlp_state,
5361                                                          ndlp->nlp_rpi,
5362                                                          ndlp->nlp_flag);
5363                                         goto out_free_mbox;
5364                                 }
5365                         }
5366
5367                         /* Increment reference count to ndlp to hold the
5368                          * reference to ndlp for the callback function.
5369                          */
5370                         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5371                         if (!mbox->ctx_ndlp)
5372                                 goto out_free_mbox;
5373
5374                         mbox->vport = vport;
5375                         if (test_bit(NLP_RM_DFLT_RPI, &ndlp->nlp_flag)) {
5376                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
5377                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
5378                         } else {
5379                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
5380                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5381                                 lpfc_nlp_set_state(vport, ndlp,
5382                                            NLP_STE_REG_LOGIN_ISSUE);
5383                         }
5384
5385                         set_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
5386                         if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5387                             != MBX_NOT_FINISHED)
5388                                 goto out;
5389
5390                         /* Decrement the ndlp reference count we
5391                          * set for this failed mailbox command.
5392                          */
5393                         lpfc_nlp_put(ndlp);
5394                         clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
5395
5396                         /* ELS rsp: Cannot issue reg_login for <NPortid> */
5397                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5398                                 "0138 ELS rsp: Cannot issue reg_login for x%x "
5399                                 "Data: x%lx x%x x%x\n",
5400                                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5401                                 ndlp->nlp_rpi);
5402                 }
5403 out_free_mbox:
5404                 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
5405         }
5406 out:
5407         if (ndlp && shost) {
5408                 if (mbox)
5409                         clear_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag);
5410                 clear_bit(NLP_RM_DFLT_RPI, &ndlp->nlp_flag);
5411         }
5412
5413         /* An SLI4 NPIV instance wants to drop the node at this point under
5414          * these conditions because it doesn't need the login.
5415          */
5416         if (phba->sli_rev == LPFC_SLI_REV4 &&
5417             vport && vport->port_type == LPFC_NPIV_PORT &&
5418             !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) {
5419                 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE &&
5420                     ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE &&
5421                     ndlp->nlp_state != NLP_STE_PRLI_ISSUE) {
5422                         /* Drop ndlp if there is no planned or outstanding
5423                          * issued PRLI.
5424                          *
5425                          * In cases when the ndlp is acting as both an initiator
5426                          * and target function, let our issued PRLI determine
5427                          * the final ndlp kref drop.
5428                          */
5429                         lpfc_drop_node(vport, ndlp);
5430                 }
5431         }
5432
5433         /* Release the originating I/O reference. */
5434         lpfc_els_free_iocb(phba, cmdiocb);
5435         lpfc_nlp_put(ndlp);
5436         return;
5437 }
5438
5439 /**
5440  * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
5441  * @vport: pointer to a host virtual N_Port data structure.
5442  * @flag: the els command code to be accepted.
5443  * @oldiocb: pointer to the original lpfc command iocb data structure.
5444  * @ndlp: pointer to a node-list data structure.
5445  * @mbox: pointer to the driver internal queue element for mailbox command.
5446  *
5447  * This routine prepares and issues an Accept (ACC) response IOCB
5448  * command. It uses the @flag to properly set up the IOCB field for the
5449  * specific ACC response command to be issued and invokes the
5450  * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
5451  * @mbox pointer is passed in, it will be put into the context_un.mbox
5452  * field of the IOCB for the completion callback function to issue the
5453  * mailbox command to the HBA later when callback is invoked.
5454  *
5455  * Note that the ndlp reference count will be incremented by 1 for holding the
5456  * ndlp and the reference to ndlp will be stored into the ndlp field of
5457  * the IOCB for the completion callback function to the corresponding
5458  * response ELS IOCB command.
5459  *
5460  * Return code
5461  *   0 - Successfully issued acc response
5462  *   1 - Failed to issue acc response
5463  **/
5464 int
5465 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
5466                  struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
5467                  LPFC_MBOXQ_t *mbox)
5468 {
5469         struct lpfc_hba  *phba = vport->phba;
5470         IOCB_t *icmd;
5471         IOCB_t *oldcmd;
5472         union lpfc_wqe128 *wqe;
5473         union lpfc_wqe128 *oldwqe = &oldiocb->wqe;
5474         struct lpfc_iocbq *elsiocb;
5475         uint8_t *pcmd;
5476         struct serv_parm *sp;
5477         uint16_t cmdsize;
5478         int rc;
5479         ELS_PKT *els_pkt_ptr;
5480         struct fc_els_rdf_resp *rdf_resp;
5481
5482         switch (flag) {
5483         case ELS_CMD_ACC:
5484                 cmdsize = sizeof(uint32_t);
5485                 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5486                                              ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5487                 if (!elsiocb) {
5488                         clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5489                         return 1;
5490                 }
5491
5492                 if (phba->sli_rev == LPFC_SLI_REV4) {
5493                         wqe = &elsiocb->wqe;
5494                         /* XRI / rx_id */
5495                         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5496                                bf_get(wqe_ctxt_tag,
5497                                       &oldwqe->xmit_els_rsp.wqe_com));
5498
5499                         /* oxid */
5500                         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5501                                bf_get(wqe_rcvoxid,
5502                                       &oldwqe->xmit_els_rsp.wqe_com));
5503                 } else {
5504                         icmd = &elsiocb->iocb;
5505                         oldcmd = &oldiocb->iocb;
5506                         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5507                         icmd->unsli3.rcvsli3.ox_id =
5508                                 oldcmd->unsli3.rcvsli3.ox_id;
5509                 }
5510
5511                 pcmd = elsiocb->cmd_dmabuf->virt;
5512                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5513                 pcmd += sizeof(uint32_t);
5514
5515                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5516                         "Issue ACC:       did:x%x flg:x%lx",
5517                         ndlp->nlp_DID, ndlp->nlp_flag, 0);
5518                 break;
5519         case ELS_CMD_FLOGI:
5520         case ELS_CMD_PLOGI:
5521                 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
5522                 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5523                                              ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5524                 if (!elsiocb)
5525                         return 1;
5526
5527                 if (phba->sli_rev == LPFC_SLI_REV4) {
5528                         wqe = &elsiocb->wqe;
5529                         /* XRI / rx_id */
5530                         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5531                                bf_get(wqe_ctxt_tag,
5532                                       &oldwqe->xmit_els_rsp.wqe_com));
5533
5534                         /* oxid */
5535                         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5536                                bf_get(wqe_rcvoxid,
5537                                       &oldwqe->xmit_els_rsp.wqe_com));
5538                 } else {
5539                         icmd = &elsiocb->iocb;
5540                         oldcmd = &oldiocb->iocb;
5541                         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5542                         icmd->unsli3.rcvsli3.ox_id =
5543                                 oldcmd->unsli3.rcvsli3.ox_id;
5544                 }
5545
5546                 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
5547
5548                 if (mbox)
5549                         elsiocb->context_un.mbox = mbox;
5550
5551                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5552                 pcmd += sizeof(uint32_t);
5553                 sp = (struct serv_parm *)pcmd;
5554
5555                 if (flag == ELS_CMD_FLOGI) {
5556                         /* Copy the received service parameters back */
5557                         memcpy(sp, &phba->fc_fabparam,
5558                                sizeof(struct serv_parm));
5559
5560                         /* Clear the F_Port bit */
5561                         sp->cmn.fPort = 0;
5562
5563                         /* Mark all class service parameters as invalid */
5564                         sp->cls1.classValid = 0;
5565                         sp->cls2.classValid = 0;
5566                         sp->cls3.classValid = 0;
5567                         sp->cls4.classValid = 0;
5568
5569                         /* Copy our worldwide names */
5570                         memcpy(&sp->portName, &vport->fc_sparam.portName,
5571                                sizeof(struct lpfc_name));
5572                         memcpy(&sp->nodeName, &vport->fc_sparam.nodeName,
5573                                sizeof(struct lpfc_name));
5574                 } else {
5575                         memcpy(pcmd, &vport->fc_sparam,
5576                                sizeof(struct serv_parm));
5577
5578                         sp->cmn.valid_vendor_ver_level = 0;
5579                         memset(sp->un.vendorVersion, 0,
5580                                sizeof(sp->un.vendorVersion));
5581                         sp->cmn.bbRcvSizeMsb &= 0xF;
5582
5583                         /* If our firmware supports this feature, convey that
5584                          * info to the target using the vendor specific field.
5585                          */
5586                         if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
5587                                 sp->cmn.valid_vendor_ver_level = 1;
5588                                 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
5589                                 sp->un.vv.flags =
5590                                         cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
5591                         }
5592                 }
5593
5594                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5595                         "Issue ACC FLOGI/PLOGI: did:x%x flg:x%lx",
5596                         ndlp->nlp_DID, ndlp->nlp_flag, 0);
5597                 break;
5598         case ELS_CMD_PRLO:
5599                 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
5600                 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5601                                              ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
5602                 if (!elsiocb)
5603                         return 1;
5604
5605                 if (phba->sli_rev == LPFC_SLI_REV4) {
5606                         wqe = &elsiocb->wqe;
5607                         /* XRI / rx_id */
5608                         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5609                                bf_get(wqe_ctxt_tag,
5610                                       &oldwqe->xmit_els_rsp.wqe_com));
5611
5612                         /* oxid */
5613                         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5614                                bf_get(wqe_rcvoxid,
5615                                       &oldwqe->xmit_els_rsp.wqe_com));
5616                 } else {
5617                         icmd = &elsiocb->iocb;
5618                         oldcmd = &oldiocb->iocb;
5619                         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5620                         icmd->unsli3.rcvsli3.ox_id =
5621                                 oldcmd->unsli3.rcvsli3.ox_id;
5622                 }
5623
5624                 pcmd = (u8 *) elsiocb->cmd_dmabuf->virt;
5625
5626                 memcpy(pcmd, oldiocb->cmd_dmabuf->virt,
5627                        sizeof(uint32_t) + sizeof(PRLO));
5628                 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
5629                 els_pkt_ptr = (ELS_PKT *) pcmd;
5630                 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
5631
5632                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5633                         "Issue ACC PRLO:  did:x%x flg:x%lx",
5634                         ndlp->nlp_DID, ndlp->nlp_flag, 0);
5635                 break;
5636         case ELS_CMD_RDF:
5637                 cmdsize = sizeof(*rdf_resp);
5638                 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5639                                              ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5640                 if (!elsiocb)
5641                         return 1;
5642
5643                 if (phba->sli_rev == LPFC_SLI_REV4) {
5644                         wqe = &elsiocb->wqe;
5645                         /* XRI / rx_id */
5646                         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5647                                bf_get(wqe_ctxt_tag,
5648                                       &oldwqe->xmit_els_rsp.wqe_com));
5649
5650                         /* oxid */
5651                         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5652                                bf_get(wqe_rcvoxid,
5653                                       &oldwqe->xmit_els_rsp.wqe_com));
5654                 } else {
5655                         icmd = &elsiocb->iocb;
5656                         oldcmd = &oldiocb->iocb;
5657                         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5658                         icmd->unsli3.rcvsli3.ox_id =
5659                                 oldcmd->unsli3.rcvsli3.ox_id;
5660                 }
5661
5662                 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
5663                 rdf_resp = (struct fc_els_rdf_resp *)pcmd;
5664                 memset(rdf_resp, 0, sizeof(*rdf_resp));
5665                 rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC;
5666
5667                 /* FC-LS-5 specifies desc_list_len shall be set to 12 */
5668                 rdf_resp->desc_list_len = cpu_to_be32(12);
5669
5670                 /* FC-LS-5 specifies LS REQ Information descriptor */
5671                 rdf_resp->lsri.desc_tag = cpu_to_be32(1);
5672                 rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32));
5673                 rdf_resp->lsri.rqst_w0.cmd = ELS_RDF;
5674                 break;
5675         default:
5676                 return 1;
5677         }
5678         if (test_bit(NLP_LOGO_ACC, &ndlp->nlp_flag)) {
5679                 if (!test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag) &&
5680                     !test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag))
5681                         clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5682                 elsiocb->cmd_cmpl = lpfc_cmpl_els_logo_acc;
5683         } else {
5684                 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5685         }
5686
5687         phba->fc_stat.elsXmitACC++;
5688         elsiocb->ndlp = lpfc_nlp_get(ndlp);
5689         if (!elsiocb->ndlp) {
5690                 lpfc_els_free_iocb(phba, elsiocb);
5691                 return 1;
5692         }
5693
5694         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5695         if (rc == IOCB_ERROR) {
5696                 lpfc_els_free_iocb(phba, elsiocb);
5697                 lpfc_nlp_put(ndlp);
5698                 return 1;
5699         }
5700
5701         /* Xmit ELS ACC response tag <ulpIoTag> */
5702         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5703                          "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, "
5704                          "XRI: x%x, DID: x%x, nlp_flag: x%lx nlp_state: x%x "
5705                          "RPI: x%x, fc_flag x%lx refcnt %d\n",
5706                          rc, elsiocb->iotag, elsiocb->sli4_xritag,
5707                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5708                          ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref));
5709         return 0;
5710 }
5711
5712 /**
5713  * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command
5714  * @vport: pointer to a virtual N_Port data structure.
5715  * @rejectError: reject response to issue
5716  * @oldiocb: pointer to the original lpfc command iocb data structure.
5717  * @ndlp: pointer to a node-list data structure.
5718  * @mbox: pointer to the driver internal queue element for mailbox command.
5719  *
5720  * This routine prepares and issue an Reject (RJT) response IOCB
5721  * command. If a @mbox pointer is passed in, it will be put into the
5722  * context_un.mbox field of the IOCB for the completion callback function
5723  * to issue to the HBA later.
5724  *
5725  * Note that the ndlp reference count will be incremented by 1 for holding the
5726  * ndlp and the reference to ndlp will be stored into the ndlp field of
5727  * the IOCB for the completion callback function to the reject response
5728  * ELS IOCB command.
5729  *
5730  * Return code
5731  *   0 - Successfully issued reject response
5732  *   1 - Failed to issue reject response
5733  **/
5734 int
5735 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
5736                     struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
5737                     LPFC_MBOXQ_t *mbox)
5738 {
5739         int rc;
5740         struct lpfc_hba  *phba = vport->phba;
5741         IOCB_t *icmd;
5742         IOCB_t *oldcmd;
5743         union lpfc_wqe128 *wqe;
5744         struct lpfc_iocbq *elsiocb;
5745         uint8_t *pcmd;
5746         uint16_t cmdsize;
5747
5748         cmdsize = 2 * sizeof(uint32_t);
5749         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5750                                      ndlp->nlp_DID, ELS_CMD_LS_RJT);
5751         if (!elsiocb)
5752                 return 1;
5753
5754         if (phba->sli_rev == LPFC_SLI_REV4) {
5755                 wqe = &elsiocb->wqe;
5756                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5757                        get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
5758                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5759                        get_job_rcvoxid(phba, oldiocb));
5760         } else {
5761                 icmd = &elsiocb->iocb;
5762                 oldcmd = &oldiocb->iocb;
5763                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5764                 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
5765         }
5766
5767         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
5768
5769         *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
5770         pcmd += sizeof(uint32_t);
5771         *((uint32_t *) (pcmd)) = rejectError;
5772
5773         if (mbox)
5774                 elsiocb->context_un.mbox = mbox;
5775
5776         /* Xmit ELS RJT <err> response tag <ulpIoTag> */
5777         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5778                          "0129 Xmit ELS RJT x%x response tag x%x "
5779                          "xri x%x, did x%x, nlp_flag x%lx, nlp_state x%x, "
5780                          "rpi x%x\n",
5781                          rejectError, elsiocb->iotag,
5782                          get_job_ulpcontext(phba, elsiocb), ndlp->nlp_DID,
5783                          ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
5784         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5785                 "Issue LS_RJT:    did:x%x flg:x%lx err:x%x",
5786                 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
5787
5788         phba->fc_stat.elsXmitLSRJT++;
5789         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5790         elsiocb->ndlp = lpfc_nlp_get(ndlp);
5791         if (!elsiocb->ndlp) {
5792                 lpfc_els_free_iocb(phba, elsiocb);
5793                 return 1;
5794         }
5795
5796         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5797         if (rc == IOCB_ERROR) {
5798                 lpfc_els_free_iocb(phba, elsiocb);
5799                 lpfc_nlp_put(ndlp);
5800                 return 1;
5801         }
5802
5803         return 0;
5804 }
5805
5806  /**
5807   * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric.
5808   * @vport: pointer to a host virtual N_Port data structure.
5809   * @cmdiocb: pointer to the original lpfc command iocb data structure.
5810   * @ndlp: NPort to where rsp is directed
5811   *
5812   * This routine issues an EDC ACC RSP to the F-Port Controller to communicate
5813   * this N_Port's support of hardware signals in its Congestion
5814   * Capabilities Descriptor.
5815   *
5816   * Return code
5817   *   0 - Successfully issued edc rsp command
5818   *   1 - Failed to issue edc rsp command
5819   **/
5820 static int
5821 lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5822                        struct lpfc_nodelist *ndlp)
5823 {
5824         struct lpfc_hba  *phba = vport->phba;
5825         struct fc_els_edc_resp *edc_rsp;
5826         struct fc_tlv_desc *tlv;
5827         struct lpfc_iocbq *elsiocb;
5828         IOCB_t *icmd, *cmd;
5829         union lpfc_wqe128 *wqe;
5830         u32 cgn_desc_size, lft_desc_size;
5831         u16 cmdsize;
5832         uint8_t *pcmd;
5833         int rc;
5834
5835         cmdsize = sizeof(struct fc_els_edc_resp);
5836         cgn_desc_size = sizeof(struct fc_diag_cg_sig_desc);
5837         lft_desc_size = (lpfc_link_is_lds_capable(phba)) ?
5838                                 sizeof(struct fc_diag_lnkflt_desc) : 0;
5839         cmdsize += cgn_desc_size + lft_desc_size;
5840         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry,
5841                                      ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5842         if (!elsiocb)
5843                 return 1;
5844
5845         if (phba->sli_rev == LPFC_SLI_REV4) {
5846                 wqe = &elsiocb->wqe;
5847                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5848                        get_job_ulpcontext(phba, cmdiocb)); /* Xri / rx_id */
5849                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5850                        get_job_rcvoxid(phba, cmdiocb));
5851         } else {
5852                 icmd = &elsiocb->iocb;
5853                 cmd = &cmdiocb->iocb;
5854                 icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */
5855                 icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id;
5856         }
5857
5858         pcmd = elsiocb->cmd_dmabuf->virt;
5859         memset(pcmd, 0, cmdsize);
5860
5861         edc_rsp = (struct fc_els_edc_resp *)pcmd;
5862         edc_rsp->acc_hdr.la_cmd = ELS_LS_ACC;
5863         edc_rsp->desc_list_len = cpu_to_be32(sizeof(struct fc_els_lsri_desc) +
5864                                                 cgn_desc_size + lft_desc_size);
5865         edc_rsp->lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO);
5866         edc_rsp->lsri.desc_len = cpu_to_be32(
5867                 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc));
5868         edc_rsp->lsri.rqst_w0.cmd = ELS_EDC;
5869         tlv = edc_rsp->desc;
5870         lpfc_format_edc_cgn_desc(phba, tlv);
5871         tlv = fc_tlv_next_desc(tlv);
5872         if (lft_desc_size)
5873                 lpfc_format_edc_lft_desc(phba, tlv);
5874
5875         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5876                               "Issue EDC ACC:      did:x%x flg:x%lx refcnt %d",
5877                               ndlp->nlp_DID, ndlp->nlp_flag,
5878                               kref_read(&ndlp->kref));
5879         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5880
5881         phba->fc_stat.elsXmitACC++;
5882         elsiocb->ndlp = lpfc_nlp_get(ndlp);
5883         if (!elsiocb->ndlp) {
5884                 lpfc_els_free_iocb(phba, elsiocb);
5885                 return 1;
5886         }
5887
5888         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5889         if (rc == IOCB_ERROR) {
5890                 lpfc_els_free_iocb(phba, elsiocb);
5891                 lpfc_nlp_put(ndlp);
5892                 return 1;
5893         }
5894
5895         /* Xmit ELS ACC response tag <ulpIoTag> */
5896         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5897                          "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, "
5898                          "XRI: x%x, DID: x%x, nlp_flag: x%lx nlp_state: x%x "
5899                          "RPI: x%x, fc_flag x%lx\n",
5900                          rc, elsiocb->iotag, elsiocb->sli4_xritag,
5901                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5902                          ndlp->nlp_rpi, vport->fc_flag);
5903
5904         return 0;
5905 }
5906
5907 /**
5908  * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
5909  * @vport: pointer to a virtual N_Port data structure.
5910  * @oldiocb: pointer to the original lpfc command iocb data structure.
5911  * @ndlp: pointer to a node-list data structure.
5912  *
5913  * This routine prepares and issues an Accept (ACC) response to Address
5914  * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
5915  * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
5916  *
5917  * Note that the ndlp reference count will be incremented by 1 for holding the
5918  * ndlp and the reference to ndlp will be stored into the ndlp field of
5919  * the IOCB for the completion callback function to the ADISC Accept response
5920  * ELS IOCB command.
5921  *
5922  * Return code
5923  *   0 - Successfully issued acc adisc response
5924  *   1 - Failed to issue adisc acc response
5925  **/
5926 int
5927 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
5928                        struct lpfc_nodelist *ndlp)
5929 {
5930         struct lpfc_hba  *phba = vport->phba;
5931         ADISC *ap;
5932         IOCB_t *icmd, *oldcmd;
5933         union lpfc_wqe128 *wqe;
5934         struct lpfc_iocbq *elsiocb;
5935         uint8_t *pcmd;
5936         uint16_t cmdsize;
5937         int rc;
5938         u32 ulp_context;
5939
5940         cmdsize = sizeof(uint32_t) + sizeof(ADISC);
5941         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5942                                      ndlp->nlp_DID, ELS_CMD_ACC);
5943         if (!elsiocb)
5944                 return 1;
5945
5946         if (phba->sli_rev == LPFC_SLI_REV4) {
5947                 wqe = &elsiocb->wqe;
5948                 /* XRI / rx_id */
5949                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5950                        get_job_ulpcontext(phba, oldiocb));
5951                 ulp_context = get_job_ulpcontext(phba, elsiocb);
5952                 /* oxid */
5953                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5954                        get_job_rcvoxid(phba, oldiocb));
5955         } else {
5956                 icmd = &elsiocb->iocb;
5957                 oldcmd = &oldiocb->iocb;
5958                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5959                 ulp_context = elsiocb->iocb.ulpContext;
5960                 icmd->unsli3.rcvsli3.ox_id =
5961                         oldcmd->unsli3.rcvsli3.ox_id;
5962         }
5963
5964         /* Xmit ADISC ACC response tag <ulpIoTag> */
5965         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5966                          "0130 Xmit ADISC ACC response iotag x%x xri: "
5967                          "x%x, did x%x, nlp_flag x%lx, nlp_state x%x rpi x%x\n",
5968                          elsiocb->iotag, ulp_context,
5969                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5970                          ndlp->nlp_rpi);
5971         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
5972
5973         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5974         pcmd += sizeof(uint32_t);
5975
5976         ap = (ADISC *) (pcmd);
5977         ap->hardAL_PA = phba->fc_pref_ALPA;
5978         memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
5979         memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
5980         ap->DID = be32_to_cpu(vport->fc_myDID);
5981
5982         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5983                       "Issue ACC ADISC: did:x%x flg:x%lx refcnt %d",
5984                       ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
5985
5986         phba->fc_stat.elsXmitACC++;
5987         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5988         elsiocb->ndlp = lpfc_nlp_get(ndlp);
5989         if (!elsiocb->ndlp) {
5990                 lpfc_els_free_iocb(phba, elsiocb);
5991                 return 1;
5992         }
5993
5994         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5995         if (rc == IOCB_ERROR) {
5996                 lpfc_els_free_iocb(phba, elsiocb);
5997                 lpfc_nlp_put(ndlp);
5998                 return 1;
5999         }
6000
6001         return 0;
6002 }
6003
6004 /**
6005  * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
6006  * @vport: pointer to a virtual N_Port data structure.
6007  * @oldiocb: pointer to the original lpfc command iocb data structure.
6008  * @ndlp: pointer to a node-list data structure.
6009  *
6010  * This routine prepares and issues an Accept (ACC) response to Process
6011  * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
6012  * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
6013  *
6014  * Note that the ndlp reference count will be incremented by 1 for holding the
6015  * ndlp and the reference to ndlp will be stored into the ndlp field of
6016  * the IOCB for the completion callback function to the PRLI Accept response
6017  * ELS IOCB command.
6018  *
6019  * Return code
6020  *   0 - Successfully issued acc prli response
6021  *   1 - Failed to issue acc prli response
6022  **/
6023 int
6024 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
6025                       struct lpfc_nodelist *ndlp)
6026 {
6027         struct lpfc_hba  *phba = vport->phba;
6028         PRLI *npr;
6029         struct lpfc_nvme_prli *npr_nvme;
6030         lpfc_vpd_t *vpd;
6031         IOCB_t *icmd;
6032         IOCB_t *oldcmd;
6033         union lpfc_wqe128 *wqe;
6034         struct lpfc_iocbq *elsiocb;
6035         uint8_t *pcmd;
6036         uint16_t cmdsize;
6037         uint32_t prli_fc4_req, *req_payload;
6038         struct lpfc_dmabuf *req_buf;
6039         int rc;
6040         u32 elsrspcmd, ulp_context;
6041
6042         /* Need the incoming PRLI payload to determine if the ACC is for an
6043          * FC4 or NVME PRLI type.  The PRLI type is at word 1.
6044          */
6045         req_buf = oldiocb->cmd_dmabuf;
6046         req_payload = (((uint32_t *)req_buf->virt) + 1);
6047
6048         /* PRLI type payload is at byte 3 for FCP or NVME. */
6049         prli_fc4_req = be32_to_cpu(*req_payload);
6050         prli_fc4_req = (prli_fc4_req >> 24) & 0xff;
6051         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6052                          "6127 PRLI_ACC:  Req Type x%x, Word1 x%08x\n",
6053                          prli_fc4_req, *((uint32_t *)req_payload));
6054
6055         if (prli_fc4_req == PRLI_FCP_TYPE) {
6056                 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
6057                 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
6058         } else if (prli_fc4_req == PRLI_NVME_TYPE) {
6059                 cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli);
6060                 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK));
6061         } else {
6062                 return 1;
6063         }
6064
6065         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6066                                      ndlp->nlp_DID, elsrspcmd);
6067         if (!elsiocb)
6068                 return 1;
6069
6070         if (phba->sli_rev == LPFC_SLI_REV4) {
6071                 wqe = &elsiocb->wqe;
6072                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6073                        get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6074                 ulp_context = get_job_ulpcontext(phba, elsiocb);
6075                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6076                        get_job_rcvoxid(phba, oldiocb));
6077         } else {
6078                 icmd = &elsiocb->iocb;
6079                 oldcmd = &oldiocb->iocb;
6080                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6081                 ulp_context = elsiocb->iocb.ulpContext;
6082                 icmd->unsli3.rcvsli3.ox_id =
6083                         oldcmd->unsli3.rcvsli3.ox_id;
6084         }
6085
6086         /* Xmit PRLI ACC response tag <ulpIoTag> */
6087         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6088                          "0131 Xmit PRLI ACC response tag x%x xri x%x, "
6089                          "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x\n",
6090                          elsiocb->iotag, ulp_context,
6091                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
6092                          ndlp->nlp_rpi);
6093         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6094         memset(pcmd, 0, cmdsize);
6095
6096         *((uint32_t *)(pcmd)) = elsrspcmd;
6097         pcmd += sizeof(uint32_t);
6098
6099         /* For PRLI, remainder of payload is PRLI parameter page */
6100         vpd = &phba->vpd;
6101
6102         if (prli_fc4_req == PRLI_FCP_TYPE) {
6103                 /*
6104                  * If the remote port is a target and our firmware version
6105                  * is 3.20 or later, set the following bits for FC-TAPE
6106                  * support.
6107                  */
6108                 npr = (PRLI *) pcmd;
6109                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
6110                     (vpd->rev.feaLevelHigh >= 0x02)) {
6111                         npr->ConfmComplAllowed = 1;
6112                         npr->Retry = 1;
6113                         npr->TaskRetryIdReq = 1;
6114                 }
6115                 npr->acceptRspCode = PRLI_REQ_EXECUTED;
6116
6117                 /* Set image pair for complementary pairs only. */
6118                 if (ndlp->nlp_type & NLP_FCP_TARGET)
6119                         npr->estabImagePair = 1;
6120                 else
6121                         npr->estabImagePair = 0;
6122                 npr->readXferRdyDis = 1;
6123                 npr->ConfmComplAllowed = 1;
6124                 npr->prliType = PRLI_FCP_TYPE;
6125                 npr->initiatorFunc = 1;
6126
6127                 /* Xmit PRLI ACC response tag <ulpIoTag> */
6128                 lpfc_printf_vlog(vport, KERN_INFO,
6129                                  LOG_ELS | LOG_NODE | LOG_DISCOVERY,
6130                                  "6014 FCP issue PRLI ACC imgpair %d "
6131                                  "retry %d task %d\n",
6132                                  npr->estabImagePair,
6133                                  npr->Retry, npr->TaskRetryIdReq);
6134
6135         } else if (prli_fc4_req == PRLI_NVME_TYPE) {
6136                 /* Respond with an NVME PRLI Type */
6137                 npr_nvme = (struct lpfc_nvme_prli *) pcmd;
6138                 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
6139                 bf_set(prli_estabImagePair, npr_nvme, 0);  /* Should be 0 */
6140                 bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED);
6141                 if (phba->nvmet_support) {
6142                         bf_set(prli_tgt, npr_nvme, 1);
6143                         bf_set(prli_disc, npr_nvme, 1);
6144                         if (phba->cfg_nvme_enable_fb) {
6145                                 bf_set(prli_fba, npr_nvme, 1);
6146
6147                                 /* TBD.  Target mode needs to post buffers
6148                                  * that support the configured first burst
6149                                  * byte size.
6150                                  */
6151                                 bf_set(prli_fb_sz, npr_nvme,
6152                                        phba->cfg_nvmet_fb_size);
6153                         }
6154                 } else {
6155                         bf_set(prli_init, npr_nvme, 1);
6156                 }
6157
6158                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
6159                                  "6015 NVME issue PRLI ACC word1 x%08x "
6160                                  "word4 x%08x word5 x%08x flag x%lx, "
6161                                  "fcp_info x%x nlp_type x%x\n",
6162                                  npr_nvme->word1, npr_nvme->word4,
6163                                  npr_nvme->word5, ndlp->nlp_flag,
6164                                  ndlp->nlp_fcp_info, ndlp->nlp_type);
6165                 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
6166                 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
6167                 npr_nvme->word5 = cpu_to_be32(npr_nvme->word5);
6168         } else
6169                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6170                                  "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n",
6171                                  prli_fc4_req, ndlp->nlp_fc4_type,
6172                                  ndlp->nlp_DID);
6173
6174         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6175                       "Issue ACC PRLI:  did:x%x flg:x%lx",
6176                       ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6177
6178         phba->fc_stat.elsXmitACC++;
6179         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6180         elsiocb->ndlp =  lpfc_nlp_get(ndlp);
6181         if (!elsiocb->ndlp) {
6182                 lpfc_els_free_iocb(phba, elsiocb);
6183                 return 1;
6184         }
6185
6186         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6187         if (rc == IOCB_ERROR) {
6188                 lpfc_els_free_iocb(phba, elsiocb);
6189                 lpfc_nlp_put(ndlp);
6190                 return 1;
6191         }
6192
6193         return 0;
6194 }
6195
6196 /**
6197  * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
6198  * @vport: pointer to a virtual N_Port data structure.
6199  * @format: rnid command format.
6200  * @oldiocb: pointer to the original lpfc command iocb data structure.
6201  * @ndlp: pointer to a node-list data structure.
6202  *
6203  * This routine issues a Request Node Identification Data (RNID) Accept
6204  * (ACC) response. It constructs the RNID ACC response command according to
6205  * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
6206  * issue the response.
6207  *
6208  * Note that the ndlp reference count will be incremented by 1 for holding the
6209  * ndlp and the reference to ndlp will be stored into the ndlp field of
6210  * the IOCB for the completion callback function.
6211  *
6212  * Return code
6213  *   0 - Successfully issued acc rnid response
6214  *   1 - Failed to issue acc rnid response
6215  **/
6216 static int
6217 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
6218                       struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
6219 {
6220         struct lpfc_hba  *phba = vport->phba;
6221         RNID *rn;
6222         IOCB_t *icmd, *oldcmd;
6223         union lpfc_wqe128 *wqe;
6224         struct lpfc_iocbq *elsiocb;
6225         uint8_t *pcmd;
6226         uint16_t cmdsize;
6227         int rc;
6228         u32 ulp_context;
6229
6230         cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
6231                                         + (2 * sizeof(struct lpfc_name));
6232         if (format)
6233                 cmdsize += sizeof(RNID_TOP_DISC);
6234
6235         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6236                                      ndlp->nlp_DID, ELS_CMD_ACC);
6237         if (!elsiocb)
6238                 return 1;
6239
6240         if (phba->sli_rev == LPFC_SLI_REV4) {
6241                 wqe = &elsiocb->wqe;
6242                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6243                        get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6244                 ulp_context = get_job_ulpcontext(phba, elsiocb);
6245                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6246                        get_job_rcvoxid(phba, oldiocb));
6247         } else {
6248                 icmd = &elsiocb->iocb;
6249                 oldcmd = &oldiocb->iocb;
6250                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6251                 ulp_context = elsiocb->iocb.ulpContext;
6252                 icmd->unsli3.rcvsli3.ox_id =
6253                         oldcmd->unsli3.rcvsli3.ox_id;
6254         }
6255
6256         /* Xmit RNID ACC response tag <ulpIoTag> */
6257         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6258                          "0132 Xmit RNID ACC response tag x%x xri x%x\n",
6259                          elsiocb->iotag, ulp_context);
6260         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6261         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
6262         pcmd += sizeof(uint32_t);
6263
6264         memset(pcmd, 0, sizeof(RNID));
6265         rn = (RNID *) (pcmd);
6266         rn->Format = format;
6267         rn->CommonLen = (2 * sizeof(struct lpfc_name));
6268         memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
6269         memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
6270         switch (format) {
6271         case 0:
6272                 rn->SpecificLen = 0;
6273                 break;
6274         case RNID_TOPOLOGY_DISC:
6275                 rn->SpecificLen = sizeof(RNID_TOP_DISC);
6276                 memcpy(&rn->un.topologyDisc.portName,
6277                        &vport->fc_portname, sizeof(struct lpfc_name));
6278                 rn->un.topologyDisc.unitType = RNID_HBA;
6279                 rn->un.topologyDisc.physPort = 0;
6280                 rn->un.topologyDisc.attachedNodes = 0;
6281                 break;
6282         default:
6283                 rn->CommonLen = 0;
6284                 rn->SpecificLen = 0;
6285                 break;
6286         }
6287
6288         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6289                       "Issue ACC RNID:  did:x%x flg:x%lx refcnt %d",
6290                       ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6291
6292         phba->fc_stat.elsXmitACC++;
6293         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6294         elsiocb->ndlp = lpfc_nlp_get(ndlp);
6295         if (!elsiocb->ndlp) {
6296                 lpfc_els_free_iocb(phba, elsiocb);
6297                 return 1;
6298         }
6299
6300         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6301         if (rc == IOCB_ERROR) {
6302                 lpfc_els_free_iocb(phba, elsiocb);
6303                 lpfc_nlp_put(ndlp);
6304                 return 1;
6305         }
6306
6307         return 0;
6308 }
6309
6310 /**
6311  * lpfc_els_clear_rrq - Clear the rq that this rrq describes.
6312  * @vport: pointer to a virtual N_Port data structure.
6313  * @iocb: pointer to the lpfc command iocb data structure.
6314  * @ndlp: pointer to a node-list data structure.
6315  *
6316  * Return
6317  **/
6318 static void
6319 lpfc_els_clear_rrq(struct lpfc_vport *vport,
6320                    struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
6321 {
6322         struct lpfc_hba  *phba = vport->phba;
6323         uint8_t *pcmd;
6324         struct RRQ *rrq;
6325         uint16_t rxid;
6326         uint16_t xri;
6327         struct lpfc_node_rrq *prrq;
6328
6329
6330         pcmd = (uint8_t *)iocb->cmd_dmabuf->virt;
6331         pcmd += sizeof(uint32_t);
6332         rrq = (struct RRQ *)pcmd;
6333         rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg);
6334         rxid = bf_get(rrq_rxid, rrq);
6335
6336         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6337                         "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
6338                         " x%x x%x\n",
6339                         be32_to_cpu(bf_get(rrq_did, rrq)),
6340                         bf_get(rrq_oxid, rrq),
6341                         rxid,
6342                         get_wqe_reqtag(iocb),
6343                         get_job_ulpcontext(phba, iocb));
6344
6345         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6346                 "Clear RRQ:  did:x%x flg:x%lx exchg:x%.08x",
6347                 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
6348         if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq)))
6349                 xri = bf_get(rrq_oxid, rrq);
6350         else
6351                 xri = rxid;
6352         prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID);
6353         if (prrq)
6354                 lpfc_clr_rrq_active(phba, xri, prrq);
6355         return;
6356 }
6357
6358 /**
6359  * lpfc_els_rsp_echo_acc - Issue echo acc response
6360  * @vport: pointer to a virtual N_Port data structure.
6361  * @data: pointer to echo data to return in the accept.
6362  * @oldiocb: pointer to the original lpfc command iocb data structure.
6363  * @ndlp: pointer to a node-list data structure.
6364  *
6365  * Return code
6366  *   0 - Successfully issued acc echo response
6367  *   1 - Failed to issue acc echo response
6368  **/
6369 static int
6370 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
6371                       struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
6372 {
6373         struct lpfc_hba  *phba = vport->phba;
6374         IOCB_t *icmd, *oldcmd;
6375         union lpfc_wqe128 *wqe;
6376         struct lpfc_iocbq *elsiocb;
6377         uint8_t *pcmd;
6378         uint16_t cmdsize;
6379         int rc;
6380         u32 ulp_context;
6381
6382         if (phba->sli_rev == LPFC_SLI_REV4)
6383                 cmdsize = oldiocb->wcqe_cmpl.total_data_placed;
6384         else
6385                 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
6386
6387         /* The accumulated length can exceed the BPL_SIZE.  For
6388          * now, use this as the limit
6389          */
6390         if (cmdsize > LPFC_BPL_SIZE)
6391                 cmdsize = LPFC_BPL_SIZE;
6392         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6393                                      ndlp->nlp_DID, ELS_CMD_ACC);
6394         if (!elsiocb)
6395                 return 1;
6396
6397         if (phba->sli_rev == LPFC_SLI_REV4) {
6398                 wqe = &elsiocb->wqe;
6399                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6400                        get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6401                 ulp_context = get_job_ulpcontext(phba, elsiocb);
6402                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6403                        get_job_rcvoxid(phba, oldiocb));
6404         } else {
6405                 icmd = &elsiocb->iocb;
6406                 oldcmd = &oldiocb->iocb;
6407                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6408                 ulp_context = elsiocb->iocb.ulpContext;
6409                 icmd->unsli3.rcvsli3.ox_id =
6410                         oldcmd->unsli3.rcvsli3.ox_id;
6411         }
6412
6413         /* Xmit ECHO ACC response tag <ulpIoTag> */
6414         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6415                          "2876 Xmit ECHO ACC response tag x%x xri x%x\n",
6416                          elsiocb->iotag, ulp_context);
6417         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6418         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
6419         pcmd += sizeof(uint32_t);
6420         memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
6421
6422         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6423                       "Issue ACC ECHO:  did:x%x flg:x%lx refcnt %d",
6424                       ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6425
6426         phba->fc_stat.elsXmitACC++;
6427         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6428         elsiocb->ndlp =  lpfc_nlp_get(ndlp);
6429         if (!elsiocb->ndlp) {
6430                 lpfc_els_free_iocb(phba, elsiocb);
6431                 return 1;
6432         }
6433
6434         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6435         if (rc == IOCB_ERROR) {
6436                 lpfc_els_free_iocb(phba, elsiocb);
6437                 lpfc_nlp_put(ndlp);
6438                 return 1;
6439         }
6440
6441         return 0;
6442 }
6443
6444 /**
6445  * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
6446  * @vport: pointer to a host virtual N_Port data structure.
6447  *
6448  * This routine issues Address Discover (ADISC) ELS commands to those
6449  * N_Ports which are in node port recovery state and ADISC has not been issued
6450  * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
6451  * lpfc_issue_els_adisc() routine, the per @vport number of discover count
6452  * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
6453  * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
6454  * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
6455  * IOCBs quit for later pick up. On the other hand, after walking through
6456  * all the ndlps with the @vport and there is none ADISC IOCB issued, the
6457  * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
6458  * no more ADISC need to be sent.
6459  *
6460  * Return code
6461  *    The number of N_Ports with adisc issued.
6462  **/
6463 int
6464 lpfc_els_disc_adisc(struct lpfc_vport *vport)
6465 {
6466         struct lpfc_nodelist *ndlp, *next_ndlp;
6467         int sentadisc = 0;
6468
6469         /* go thru NPR nodes and issue any remaining ELS ADISCs */
6470         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
6471
6472                 if (ndlp->nlp_state != NLP_STE_NPR_NODE ||
6473                     !test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag))
6474                         continue;
6475
6476                 clear_bit(NLP_NPR_ADISC, &ndlp->nlp_flag);
6477
6478                 if (!test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag)) {
6479                         /* This node was marked for ADISC but was not picked
6480                          * for discovery. This is possible if the node was
6481                          * missing in gidft response.
6482                          *
6483                          * At time of marking node for ADISC, we skipped unreg
6484                          * from backend
6485                          */
6486                         lpfc_nlp_unreg_node(vport, ndlp);
6487                         lpfc_unreg_rpi(vport, ndlp);
6488                         continue;
6489                 }
6490
6491                 ndlp->nlp_prev_state = ndlp->nlp_state;
6492                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
6493                 lpfc_issue_els_adisc(vport, ndlp, 0);
6494                 sentadisc++;
6495                 vport->num_disc_nodes++;
6496                 if (vport->num_disc_nodes >=
6497                                 vport->cfg_discovery_threads) {
6498                         set_bit(FC_NLP_MORE, &vport->fc_flag);
6499                         break;
6500                 }
6501
6502         }
6503         if (sentadisc == 0)
6504                 clear_bit(FC_NLP_MORE, &vport->fc_flag);
6505         return sentadisc;
6506 }
6507
6508 /**
6509  * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
6510  * @vport: pointer to a host virtual N_Port data structure.
6511  *
6512  * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
6513  * which are in node port recovery state, with a @vport. Each time an ELS
6514  * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
6515  * the per @vport number of discover count (num_disc_nodes) shall be
6516  * incremented. If the num_disc_nodes reaches a pre-configured threshold
6517  * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
6518  * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
6519  * later pick up. On the other hand, after walking through all the ndlps with
6520  * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
6521  * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
6522  * PLOGI need to be sent.
6523  *
6524  * Return code
6525  *   The number of N_Ports with plogi issued.
6526  **/
6527 int
6528 lpfc_els_disc_plogi(struct lpfc_vport *vport)
6529 {
6530         struct lpfc_nodelist *ndlp, *next_ndlp;
6531         int sentplogi = 0;
6532
6533         /* go thru NPR nodes and issue any remaining ELS PLOGIs */
6534         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
6535                 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
6536                     test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag) &&
6537                     !test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag) &&
6538                     !test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) {
6539                         ndlp->nlp_prev_state = ndlp->nlp_state;
6540                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
6541                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
6542                         sentplogi++;
6543                         vport->num_disc_nodes++;
6544                         if (vport->num_disc_nodes >=
6545                                         vport->cfg_discovery_threads) {
6546                                 set_bit(FC_NLP_MORE, &vport->fc_flag);
6547                                 break;
6548                         }
6549                 }
6550         }
6551
6552         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6553                          "6452 Discover PLOGI %d flag x%lx\n",
6554                          sentplogi, vport->fc_flag);
6555
6556         if (sentplogi)
6557                 lpfc_set_disctmo(vport);
6558         else
6559                 clear_bit(FC_NLP_MORE, &vport->fc_flag);
6560         return sentplogi;
6561 }
6562
6563 static uint32_t
6564 lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc,
6565                 uint32_t word0)
6566 {
6567
6568         desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG);
6569         desc->payload.els_req = word0;
6570         desc->length = cpu_to_be32(sizeof(desc->payload));
6571
6572         return sizeof(struct fc_rdp_link_service_desc);
6573 }
6574
6575 static uint32_t
6576 lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc,
6577                 uint8_t *page_a0, uint8_t *page_a2)
6578 {
6579         uint16_t wavelength;
6580         uint16_t temperature;
6581         uint16_t rx_power;
6582         uint16_t tx_bias;
6583         uint16_t tx_power;
6584         uint16_t vcc;
6585         uint16_t flag = 0;
6586         struct sff_trasnceiver_codes_byte4 *trasn_code_byte4;
6587         struct sff_trasnceiver_codes_byte5 *trasn_code_byte5;
6588
6589         desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG);
6590
6591         trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *)
6592                         &page_a0[SSF_TRANSCEIVER_CODE_B4];
6593         trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *)
6594                         &page_a0[SSF_TRANSCEIVER_CODE_B5];
6595
6596         if ((trasn_code_byte4->fc_sw_laser) ||
6597             (trasn_code_byte5->fc_sw_laser_sl) ||
6598             (trasn_code_byte5->fc_sw_laser_sn)) {  /* check if its short WL */
6599                 flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT);
6600         } else if (trasn_code_byte4->fc_lw_laser) {
6601                 wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) |
6602                         page_a0[SSF_WAVELENGTH_B0];
6603                 if (wavelength == SFP_WAVELENGTH_LC1310)
6604                         flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT;
6605                 if (wavelength == SFP_WAVELENGTH_LL1550)
6606                         flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT;
6607         }
6608         /* check if its SFP+ */
6609         flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ?
6610                         SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN)
6611                                         << SFP_FLAG_CT_SHIFT;
6612
6613         /* check if its OPTICAL */
6614         flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ?
6615                         SFP_FLAG_IS_OPTICAL_PORT : 0)
6616                                         << SFP_FLAG_IS_OPTICAL_SHIFT;
6617
6618         temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 |
6619                 page_a2[SFF_TEMPERATURE_B0]);
6620         vcc = (page_a2[SFF_VCC_B1] << 8 |
6621                 page_a2[SFF_VCC_B0]);
6622         tx_power = (page_a2[SFF_TXPOWER_B1] << 8 |
6623                 page_a2[SFF_TXPOWER_B0]);
6624         tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 |
6625                 page_a2[SFF_TX_BIAS_CURRENT_B0]);
6626         rx_power = (page_a2[SFF_RXPOWER_B1] << 8 |
6627                 page_a2[SFF_RXPOWER_B0]);
6628         desc->sfp_info.temperature = cpu_to_be16(temperature);
6629         desc->sfp_info.rx_power = cpu_to_be16(rx_power);
6630         desc->sfp_info.tx_bias = cpu_to_be16(tx_bias);
6631         desc->sfp_info.tx_power = cpu_to_be16(tx_power);
6632         desc->sfp_info.vcc = cpu_to_be16(vcc);
6633
6634         desc->sfp_info.flags = cpu_to_be16(flag);
6635         desc->length = cpu_to_be32(sizeof(desc->sfp_info));
6636
6637         return sizeof(struct fc_rdp_sfp_desc);
6638 }
6639
6640 static uint32_t
6641 lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc,
6642                 READ_LNK_VAR *stat)
6643 {
6644         uint32_t type;
6645
6646         desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG);
6647
6648         type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT;
6649
6650         desc->info.port_type = cpu_to_be32(type);
6651
6652         desc->info.link_status.link_failure_cnt =
6653                 cpu_to_be32(stat->linkFailureCnt);
6654         desc->info.link_status.loss_of_synch_cnt =
6655                 cpu_to_be32(stat->lossSyncCnt);
6656         desc->info.link_status.loss_of_signal_cnt =
6657                 cpu_to_be32(stat->lossSignalCnt);
6658         desc->info.link_status.primitive_seq_proto_err =
6659                 cpu_to_be32(stat->primSeqErrCnt);
6660         desc->info.link_status.invalid_trans_word =
6661                 cpu_to_be32(stat->invalidXmitWord);
6662         desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt);
6663
6664         desc->length = cpu_to_be32(sizeof(desc->info));
6665
6666         return sizeof(struct fc_rdp_link_error_status_desc);
6667 }
6668
6669 static uint32_t
6670 lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat,
6671                       struct lpfc_vport *vport)
6672 {
6673         uint32_t bbCredit;
6674
6675         desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG);
6676
6677         bbCredit = vport->fc_sparam.cmn.bbCreditLsb |
6678                         (vport->fc_sparam.cmn.bbCreditMsb << 8);
6679         desc->bbc_info.port_bbc = cpu_to_be32(bbCredit);
6680         if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
6681                 bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb |
6682                         (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8);
6683                 desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit);
6684         } else {
6685                 desc->bbc_info.attached_port_bbc = 0;
6686         }
6687
6688         desc->bbc_info.rtt = 0;
6689         desc->length = cpu_to_be32(sizeof(desc->bbc_info));
6690
6691         return sizeof(struct fc_rdp_bbc_desc);
6692 }
6693
6694 static uint32_t
6695 lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba,
6696                            struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2)
6697 {
6698         uint32_t flags = 0;
6699
6700         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6701
6702         desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM];
6703         desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM];
6704         desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING];
6705         desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING];
6706
6707         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
6708                 flags |= RDP_OET_HIGH_ALARM;
6709         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
6710                 flags |= RDP_OET_LOW_ALARM;
6711         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
6712                 flags |= RDP_OET_HIGH_WARNING;
6713         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
6714                 flags |= RDP_OET_LOW_WARNING;
6715
6716         flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT);
6717         desc->oed_info.function_flags = cpu_to_be32(flags);
6718         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6719         return sizeof(struct fc_rdp_oed_sfp_desc);
6720 }
6721
6722 static uint32_t
6723 lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba,
6724                               struct fc_rdp_oed_sfp_desc *desc,
6725                               uint8_t *page_a2)
6726 {
6727         uint32_t flags = 0;
6728
6729         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6730
6731         desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM];
6732         desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM];
6733         desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING];
6734         desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING];
6735
6736         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
6737                 flags |= RDP_OET_HIGH_ALARM;
6738         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE)
6739                 flags |= RDP_OET_LOW_ALARM;
6740         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
6741                 flags |= RDP_OET_HIGH_WARNING;
6742         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE)
6743                 flags |= RDP_OET_LOW_WARNING;
6744
6745         flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT);
6746         desc->oed_info.function_flags = cpu_to_be32(flags);
6747         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6748         return sizeof(struct fc_rdp_oed_sfp_desc);
6749 }
6750
6751 static uint32_t
6752 lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba,
6753                              struct fc_rdp_oed_sfp_desc *desc,
6754                              uint8_t *page_a2)
6755 {
6756         uint32_t flags = 0;
6757
6758         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6759
6760         desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM];
6761         desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM];
6762         desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING];
6763         desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING];
6764
6765         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS)
6766                 flags |= RDP_OET_HIGH_ALARM;
6767         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS)
6768                 flags |= RDP_OET_LOW_ALARM;
6769         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS)
6770                 flags |= RDP_OET_HIGH_WARNING;
6771         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS)
6772                 flags |= RDP_OET_LOW_WARNING;
6773
6774         flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT);
6775         desc->oed_info.function_flags = cpu_to_be32(flags);
6776         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6777         return sizeof(struct fc_rdp_oed_sfp_desc);
6778 }
6779
6780 static uint32_t
6781 lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba,
6782                               struct fc_rdp_oed_sfp_desc *desc,
6783                               uint8_t *page_a2)
6784 {
6785         uint32_t flags = 0;
6786
6787         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6788
6789         desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM];
6790         desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM];
6791         desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING];
6792         desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING];
6793
6794         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER)
6795                 flags |= RDP_OET_HIGH_ALARM;
6796         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER)
6797                 flags |= RDP_OET_LOW_ALARM;
6798         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER)
6799                 flags |= RDP_OET_HIGH_WARNING;
6800         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER)
6801                 flags |= RDP_OET_LOW_WARNING;
6802
6803         flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT);
6804         desc->oed_info.function_flags = cpu_to_be32(flags);
6805         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6806         return sizeof(struct fc_rdp_oed_sfp_desc);
6807 }
6808
6809
6810 static uint32_t
6811 lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba,
6812                               struct fc_rdp_oed_sfp_desc *desc,
6813                               uint8_t *page_a2)
6814 {
6815         uint32_t flags = 0;
6816
6817         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6818
6819         desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM];
6820         desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM];
6821         desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING];
6822         desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING];
6823
6824         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER)
6825                 flags |= RDP_OET_HIGH_ALARM;
6826         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER)
6827                 flags |= RDP_OET_LOW_ALARM;
6828         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER)
6829                 flags |= RDP_OET_HIGH_WARNING;
6830         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER)
6831                 flags |= RDP_OET_LOW_WARNING;
6832
6833         flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT);
6834         desc->oed_info.function_flags = cpu_to_be32(flags);
6835         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6836         return sizeof(struct fc_rdp_oed_sfp_desc);
6837 }
6838
6839 static uint32_t
6840 lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc,
6841                       uint8_t *page_a0, struct lpfc_vport *vport)
6842 {
6843         desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG);
6844         memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16);
6845         memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16);
6846         memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16);
6847         memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4);
6848         memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8);
6849         desc->length = cpu_to_be32(sizeof(desc->opd_info));
6850         return sizeof(struct fc_rdp_opd_sfp_desc);
6851 }
6852
6853 static uint32_t
6854 lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat)
6855 {
6856         if (bf_get(lpfc_read_link_stat_gec2, stat) == 0)
6857                 return 0;
6858         desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG);
6859
6860         desc->info.CorrectedBlocks =
6861                 cpu_to_be32(stat->fecCorrBlkCount);
6862         desc->info.UncorrectableBlocks =
6863                 cpu_to_be32(stat->fecUncorrBlkCount);
6864
6865         desc->length = cpu_to_be32(sizeof(desc->info));
6866
6867         return sizeof(struct fc_fec_rdp_desc);
6868 }
6869
6870 static uint32_t
6871 lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba)
6872 {
6873         uint16_t rdp_cap = 0;
6874         uint16_t rdp_speed;
6875
6876         desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG);
6877
6878         switch (phba->fc_linkspeed) {
6879         case LPFC_LINK_SPEED_1GHZ:
6880                 rdp_speed = RDP_PS_1GB;
6881                 break;
6882         case LPFC_LINK_SPEED_2GHZ:
6883                 rdp_speed = RDP_PS_2GB;
6884                 break;
6885         case LPFC_LINK_SPEED_4GHZ:
6886                 rdp_speed = RDP_PS_4GB;
6887                 break;
6888         case LPFC_LINK_SPEED_8GHZ:
6889                 rdp_speed = RDP_PS_8GB;
6890                 break;
6891         case LPFC_LINK_SPEED_10GHZ:
6892                 rdp_speed = RDP_PS_10GB;
6893                 break;
6894         case LPFC_LINK_SPEED_16GHZ:
6895                 rdp_speed = RDP_PS_16GB;
6896                 break;
6897         case LPFC_LINK_SPEED_32GHZ:
6898                 rdp_speed = RDP_PS_32GB;
6899                 break;
6900         case LPFC_LINK_SPEED_64GHZ:
6901                 rdp_speed = RDP_PS_64GB;
6902                 break;
6903         case LPFC_LINK_SPEED_128GHZ:
6904                 rdp_speed = RDP_PS_128GB;
6905                 break;
6906         case LPFC_LINK_SPEED_256GHZ:
6907                 rdp_speed = RDP_PS_256GB;
6908                 break;
6909         default:
6910                 rdp_speed = RDP_PS_UNKNOWN;
6911                 break;
6912         }
6913
6914         desc->info.port_speed.speed = cpu_to_be16(rdp_speed);
6915
6916         if (phba->lmt & LMT_256Gb)
6917                 rdp_cap |= RDP_PS_256GB;
6918         if (phba->lmt & LMT_128Gb)
6919                 rdp_cap |= RDP_PS_128GB;
6920         if (phba->lmt & LMT_64Gb)
6921                 rdp_cap |= RDP_PS_64GB;
6922         if (phba->lmt & LMT_32Gb)
6923                 rdp_cap |= RDP_PS_32GB;
6924         if (phba->lmt & LMT_16Gb)
6925                 rdp_cap |= RDP_PS_16GB;
6926         if (phba->lmt & LMT_10Gb)
6927                 rdp_cap |= RDP_PS_10GB;
6928         if (phba->lmt & LMT_8Gb)
6929                 rdp_cap |= RDP_PS_8GB;
6930         if (phba->lmt & LMT_4Gb)
6931                 rdp_cap |= RDP_PS_4GB;
6932         if (phba->lmt & LMT_2Gb)
6933                 rdp_cap |= RDP_PS_2GB;
6934         if (phba->lmt & LMT_1Gb)
6935                 rdp_cap |= RDP_PS_1GB;
6936
6937         if (rdp_cap == 0)
6938                 rdp_cap = RDP_CAP_UNKNOWN;
6939         if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO)
6940                 rdp_cap |= RDP_CAP_USER_CONFIGURED;
6941
6942         desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap);
6943         desc->length = cpu_to_be32(sizeof(desc->info));
6944         return sizeof(struct fc_rdp_port_speed_desc);
6945 }
6946
6947 static uint32_t
6948 lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc,
6949                 struct lpfc_vport *vport)
6950 {
6951
6952         desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
6953
6954         memcpy(desc->port_names.wwnn, &vport->fc_nodename,
6955                         sizeof(desc->port_names.wwnn));
6956
6957         memcpy(desc->port_names.wwpn, &vport->fc_portname,
6958                         sizeof(desc->port_names.wwpn));
6959
6960         desc->length = cpu_to_be32(sizeof(desc->port_names));
6961         return sizeof(struct fc_rdp_port_name_desc);
6962 }
6963
6964 static uint32_t
6965 lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc,
6966                 struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
6967 {
6968
6969         desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
6970         if (test_bit(FC_FABRIC, &vport->fc_flag)) {
6971                 memcpy(desc->port_names.wwnn, &vport->fabric_nodename,
6972                        sizeof(desc->port_names.wwnn));
6973
6974                 memcpy(desc->port_names.wwpn, &vport->fabric_portname,
6975                        sizeof(desc->port_names.wwpn));
6976         } else {  /* Point to Point */
6977                 memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename,
6978                        sizeof(desc->port_names.wwnn));
6979
6980                 memcpy(desc->port_names.wwpn, &ndlp->nlp_portname,
6981                        sizeof(desc->port_names.wwpn));
6982         }
6983
6984         desc->length = cpu_to_be32(sizeof(desc->port_names));
6985         return sizeof(struct fc_rdp_port_name_desc);
6986 }
6987
6988 static void
6989 lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
6990                 int status)
6991 {
6992         struct lpfc_nodelist *ndlp = rdp_context->ndlp;
6993         struct lpfc_vport *vport = ndlp->vport;
6994         struct lpfc_iocbq *elsiocb;
6995         struct ulp_bde64 *bpl;
6996         IOCB_t *icmd;
6997         union lpfc_wqe128 *wqe;
6998         uint8_t *pcmd;
6999         struct ls_rjt *stat;
7000         struct fc_rdp_res_frame *rdp_res;
7001         uint32_t cmdsize, len;
7002         uint16_t *flag_ptr;
7003         int rc;
7004         u32 ulp_context;
7005
7006         if (status != SUCCESS)
7007                 goto error;
7008
7009         /* This will change once we know the true size of the RDP payload */
7010         cmdsize = sizeof(struct fc_rdp_res_frame);
7011
7012         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize,
7013                                 lpfc_max_els_tries, rdp_context->ndlp,
7014                                 rdp_context->ndlp->nlp_DID, ELS_CMD_ACC);
7015         if (!elsiocb)
7016                 goto free_rdp_context;
7017
7018         ulp_context = get_job_ulpcontext(phba, elsiocb);
7019         if (phba->sli_rev == LPFC_SLI_REV4) {
7020                 wqe = &elsiocb->wqe;
7021                 /* ox-id of the frame */
7022                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7023                        rdp_context->ox_id);
7024                 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
7025                        rdp_context->rx_id);
7026         } else {
7027                 icmd = &elsiocb->iocb;
7028                 icmd->ulpContext = rdp_context->rx_id;
7029                 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
7030         }
7031
7032         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7033                         "2171 Xmit RDP response tag x%x xri x%x, "
7034                         "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x",
7035                         elsiocb->iotag, ulp_context,
7036                         ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
7037                         ndlp->nlp_rpi);
7038         rdp_res = (struct fc_rdp_res_frame *)elsiocb->cmd_dmabuf->virt;
7039         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7040         memset(pcmd, 0, sizeof(struct fc_rdp_res_frame));
7041         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
7042
7043         /* Update Alarm and Warning */
7044         flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS);
7045         phba->sfp_alarm |= *flag_ptr;
7046         flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS);
7047         phba->sfp_warning |= *flag_ptr;
7048
7049         /* For RDP payload */
7050         len = 8;
7051         len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *)
7052                                          (len + pcmd), ELS_CMD_RDP);
7053
7054         len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd),
7055                         rdp_context->page_a0, rdp_context->page_a2);
7056         len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd),
7057                                   phba);
7058         len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *)
7059                                        (len + pcmd), &rdp_context->link_stat);
7060         len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *)
7061                                              (len + pcmd), vport);
7062         len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *)
7063                                         (len + pcmd), vport, ndlp);
7064         len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd),
7065                         &rdp_context->link_stat);
7066         len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd),
7067                                      &rdp_context->link_stat, vport);
7068         len += lpfc_rdp_res_oed_temp_desc(phba,
7069                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7070                                 rdp_context->page_a2);
7071         len += lpfc_rdp_res_oed_voltage_desc(phba,
7072                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7073                                 rdp_context->page_a2);
7074         len += lpfc_rdp_res_oed_txbias_desc(phba,
7075                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7076                                 rdp_context->page_a2);
7077         len += lpfc_rdp_res_oed_txpower_desc(phba,
7078                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7079                                 rdp_context->page_a2);
7080         len += lpfc_rdp_res_oed_rxpower_desc(phba,
7081                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7082                                 rdp_context->page_a2);
7083         len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd),
7084                                      rdp_context->page_a0, vport);
7085
7086         rdp_res->length = cpu_to_be32(len - 8);
7087         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7088
7089         /* Now that we know the true size of the payload, update the BPL */
7090         bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt;
7091         bpl->tus.f.bdeSize = len;
7092         bpl->tus.f.bdeFlags = 0;
7093         bpl->tus.w = le32_to_cpu(bpl->tus.w);
7094
7095         phba->fc_stat.elsXmitACC++;
7096         elsiocb->ndlp = lpfc_nlp_get(ndlp);
7097         if (!elsiocb->ndlp) {
7098                 lpfc_els_free_iocb(phba, elsiocb);
7099                 goto free_rdp_context;
7100         }
7101
7102         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7103         if (rc == IOCB_ERROR) {
7104                 lpfc_els_free_iocb(phba, elsiocb);
7105                 lpfc_nlp_put(ndlp);
7106         }
7107
7108         goto free_rdp_context;
7109
7110 error:
7111         cmdsize = 2 * sizeof(uint32_t);
7112         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries,
7113                         ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
7114         if (!elsiocb)
7115                 goto free_rdp_context;
7116
7117         if (phba->sli_rev == LPFC_SLI_REV4) {
7118                 wqe = &elsiocb->wqe;
7119                 /* ox-id of the frame */
7120                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7121                        rdp_context->ox_id);
7122                 bf_set(wqe_ctxt_tag,
7123                        &wqe->xmit_els_rsp.wqe_com,
7124                        rdp_context->rx_id);
7125         } else {
7126                 icmd = &elsiocb->iocb;
7127                 icmd->ulpContext = rdp_context->rx_id;
7128                 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
7129         }
7130
7131         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7132
7133         *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
7134         stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
7135         stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7136
7137         phba->fc_stat.elsXmitLSRJT++;
7138         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7139         elsiocb->ndlp = lpfc_nlp_get(ndlp);
7140         if (!elsiocb->ndlp) {
7141                 lpfc_els_free_iocb(phba, elsiocb);
7142                 goto free_rdp_context;
7143         }
7144
7145         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7146         if (rc == IOCB_ERROR) {
7147                 lpfc_els_free_iocb(phba, elsiocb);
7148                 lpfc_nlp_put(ndlp);
7149         }
7150
7151 free_rdp_context:
7152         /* This reference put is for the original unsolicited RDP. If the
7153          * prep failed, there is no reference to remove.
7154          */
7155         lpfc_nlp_put(ndlp);
7156         kfree(rdp_context);
7157 }
7158
7159 static int
7160 lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context)
7161 {
7162         LPFC_MBOXQ_t *mbox = NULL;
7163         int rc;
7164
7165         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7166         if (!mbox) {
7167                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
7168                                 "7105 failed to allocate mailbox memory");
7169                 return 1;
7170         }
7171
7172         if (lpfc_sli4_dump_page_a0(phba, mbox))
7173                 goto rdp_fail;
7174         mbox->vport = rdp_context->ndlp->vport;
7175         mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0;
7176         mbox->ctx_u.rdp = rdp_context;
7177         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
7178         if (rc == MBX_NOT_FINISHED) {
7179                 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
7180                 return 1;
7181         }
7182
7183         return 0;
7184
7185 rdp_fail:
7186         mempool_free(mbox, phba->mbox_mem_pool);
7187         return 1;
7188 }
7189
7190 int lpfc_get_sfp_info_wait(struct lpfc_hba *phba,
7191                            struct lpfc_rdp_context *rdp_context)
7192 {
7193         LPFC_MBOXQ_t *mbox = NULL;
7194         int rc;
7195         struct lpfc_dmabuf *mp;
7196         struct lpfc_dmabuf *mpsave;
7197         void *virt;
7198         MAILBOX_t *mb;
7199
7200         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7201         if (!mbox) {
7202                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
7203                                 "7205 failed to allocate mailbox memory");
7204                 return 1;
7205         }
7206
7207         if (lpfc_sli4_dump_page_a0(phba, mbox))
7208                 goto sfp_fail;
7209         mp = mbox->ctx_buf;
7210         mpsave = mp;
7211         virt = mp->virt;
7212         if (phba->sli_rev < LPFC_SLI_REV4) {
7213                 mb = &mbox->u.mb;
7214                 mb->un.varDmp.cv = 1;
7215                 mb->un.varDmp.co = 1;
7216                 mb->un.varWords[2] = 0;
7217                 mb->un.varWords[3] = DMP_SFF_PAGE_A0_SIZE / 4;
7218                 mb->un.varWords[4] = 0;
7219                 mb->un.varWords[5] = 0;
7220                 mb->un.varWords[6] = 0;
7221                 mb->un.varWords[7] = 0;
7222                 mb->un.varWords[8] = 0;
7223                 mb->un.varWords[9] = 0;
7224                 mb->un.varWords[10] = 0;
7225                 mbox->in_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
7226                 mbox->out_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
7227                 mbox->mbox_offset_word = 5;
7228                 mbox->ext_buf = virt;
7229         } else {
7230                 bf_set(lpfc_mbx_memory_dump_type3_length,
7231                        &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A0_SIZE);
7232                 mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
7233                 mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
7234         }
7235         mbox->vport = phba->pport;
7236         rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_SLI4_CONFIG_TMO);
7237         if (rc == MBX_NOT_FINISHED) {
7238                 rc = 1;
7239                 goto error;
7240         }
7241         if (rc == MBX_TIMEOUT)
7242                 goto error;
7243         if (phba->sli_rev == LPFC_SLI_REV4)
7244                 mp = mbox->ctx_buf;
7245         else
7246                 mp = mpsave;
7247
7248         if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
7249                 rc = 1;
7250                 goto error;
7251         }
7252
7253         lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a0,
7254                              DMP_SFF_PAGE_A0_SIZE);
7255
7256         memset(mbox, 0, sizeof(*mbox));
7257         memset(mp->virt, 0, DMP_SFF_PAGE_A2_SIZE);
7258         INIT_LIST_HEAD(&mp->list);
7259
7260         /* save address for completion */
7261         mbox->ctx_buf = mp;
7262         mbox->vport = phba->pport;
7263
7264         bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_DUMP_MEMORY);
7265         bf_set(lpfc_mbx_memory_dump_type3_type,
7266                &mbox->u.mqe.un.mem_dump_type3, DMP_LMSD);
7267         bf_set(lpfc_mbx_memory_dump_type3_link,
7268                &mbox->u.mqe.un.mem_dump_type3, phba->sli4_hba.physical_port);
7269         bf_set(lpfc_mbx_memory_dump_type3_page_no,
7270                &mbox->u.mqe.un.mem_dump_type3, DMP_PAGE_A2);
7271         if (phba->sli_rev < LPFC_SLI_REV4) {
7272                 mb = &mbox->u.mb;
7273                 mb->un.varDmp.cv = 1;
7274                 mb->un.varDmp.co = 1;
7275                 mb->un.varWords[2] = 0;
7276                 mb->un.varWords[3] = DMP_SFF_PAGE_A2_SIZE / 4;
7277                 mb->un.varWords[4] = 0;
7278                 mb->un.varWords[5] = 0;
7279                 mb->un.varWords[6] = 0;
7280                 mb->un.varWords[7] = 0;
7281                 mb->un.varWords[8] = 0;
7282                 mb->un.varWords[9] = 0;
7283                 mb->un.varWords[10] = 0;
7284                 mbox->in_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
7285                 mbox->out_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
7286                 mbox->mbox_offset_word = 5;
7287                 mbox->ext_buf = virt;
7288         } else {
7289                 bf_set(lpfc_mbx_memory_dump_type3_length,
7290                        &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A2_SIZE);
7291                 mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
7292                 mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
7293         }
7294
7295         rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_SLI4_CONFIG_TMO);
7296
7297         if (rc == MBX_TIMEOUT)
7298                 goto error;
7299         if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
7300                 rc = 1;
7301                 goto error;
7302         }
7303         rc = 0;
7304
7305         lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a2,
7306                              DMP_SFF_PAGE_A2_SIZE);
7307
7308 error:
7309         if (mbox->mbox_flag & LPFC_MBX_WAKE) {
7310                 mbox->ctx_buf = mpsave;
7311                 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
7312         }
7313
7314         return rc;
7315
7316 sfp_fail:
7317         mempool_free(mbox, phba->mbox_mem_pool);
7318         return 1;
7319 }
7320
7321 /*
7322  * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
7323  * @vport: pointer to a host virtual N_Port data structure.
7324  * @cmdiocb: pointer to lpfc command iocb data structure.
7325  * @ndlp: pointer to a node-list data structure.
7326  *
7327  * This routine processes an unsolicited RDP(Read Diagnostic Parameters)
7328  * IOCB. First, the payload of the unsolicited RDP is checked.
7329  * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3
7330  * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2,
7331  * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl
7332  * gather all data and send RDP response.
7333  *
7334  * Return code
7335  *   0 - Sent the acc response
7336  *   1 - Sent the reject response.
7337  */
7338 static int
7339 lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7340                 struct lpfc_nodelist *ndlp)
7341 {
7342         struct lpfc_hba *phba = vport->phba;
7343         struct lpfc_dmabuf *pcmd;
7344         uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE;
7345         struct fc_rdp_req_frame *rdp_req;
7346         struct lpfc_rdp_context *rdp_context;
7347         union lpfc_wqe128 *cmd = NULL;
7348         struct ls_rjt stat;
7349
7350         if (phba->sli_rev < LPFC_SLI_REV4 ||
7351             bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
7352                                                 LPFC_SLI_INTF_IF_TYPE_2) {
7353                 rjt_err = LSRJT_UNABLE_TPC;
7354                 rjt_expl = LSEXP_REQ_UNSUPPORTED;
7355                 goto error;
7356         }
7357
7358         if (phba->sli_rev < LPFC_SLI_REV4 ||
7359             test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {
7360                 rjt_err = LSRJT_UNABLE_TPC;
7361                 rjt_expl = LSEXP_REQ_UNSUPPORTED;
7362                 goto error;
7363         }
7364
7365         pcmd = cmdiocb->cmd_dmabuf;
7366         rdp_req = (struct fc_rdp_req_frame *) pcmd->virt;
7367
7368         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7369                          "2422 ELS RDP Request "
7370                          "dec len %d tag x%x port_id %d len %d\n",
7371                          be32_to_cpu(rdp_req->rdp_des_length),
7372                          be32_to_cpu(rdp_req->nport_id_desc.tag),
7373                          be32_to_cpu(rdp_req->nport_id_desc.nport_id),
7374                          be32_to_cpu(rdp_req->nport_id_desc.length));
7375
7376         if (sizeof(struct fc_rdp_nport_desc) !=
7377                         be32_to_cpu(rdp_req->rdp_des_length))
7378                 goto rjt_logerr;
7379         if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag))
7380                 goto rjt_logerr;
7381         if (RDP_NPORT_ID_SIZE !=
7382                         be32_to_cpu(rdp_req->nport_id_desc.length))
7383                 goto rjt_logerr;
7384         rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL);
7385         if (!rdp_context) {
7386                 rjt_err = LSRJT_UNABLE_TPC;
7387                 goto error;
7388         }
7389
7390         cmd = &cmdiocb->wqe;
7391         rdp_context->ndlp = lpfc_nlp_get(ndlp);
7392         if (!rdp_context->ndlp) {
7393                 kfree(rdp_context);
7394                 rjt_err = LSRJT_UNABLE_TPC;
7395                 goto error;
7396         }
7397         rdp_context->ox_id = bf_get(wqe_rcvoxid,
7398                                     &cmd->xmit_els_rsp.wqe_com);
7399         rdp_context->rx_id = bf_get(wqe_ctxt_tag,
7400                                     &cmd->xmit_els_rsp.wqe_com);
7401         rdp_context->cmpl = lpfc_els_rdp_cmpl;
7402         if (lpfc_get_rdp_info(phba, rdp_context)) {
7403                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS,
7404                                  "2423 Unable to send mailbox");
7405                 kfree(rdp_context);
7406                 rjt_err = LSRJT_UNABLE_TPC;
7407                 lpfc_nlp_put(ndlp);
7408                 goto error;
7409         }
7410
7411         return 0;
7412
7413 rjt_logerr:
7414         rjt_err = LSRJT_LOGICAL_ERR;
7415
7416 error:
7417         memset(&stat, 0, sizeof(stat));
7418         stat.un.b.lsRjtRsnCode = rjt_err;
7419         stat.un.b.lsRjtRsnCodeExp = rjt_expl;
7420         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7421         return 1;
7422 }
7423
7424
7425 static void
7426 lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
7427 {
7428         MAILBOX_t *mb;
7429         IOCB_t *icmd;
7430         union lpfc_wqe128 *wqe;
7431         uint8_t *pcmd;
7432         struct lpfc_iocbq *elsiocb;
7433         struct lpfc_nodelist *ndlp;
7434         struct ls_rjt *stat;
7435         union lpfc_sli4_cfg_shdr *shdr;
7436         struct lpfc_lcb_context *lcb_context;
7437         struct fc_lcb_res_frame *lcb_res;
7438         uint32_t cmdsize, shdr_status, shdr_add_status;
7439         int rc;
7440
7441         mb = &pmb->u.mb;
7442         lcb_context = pmb->ctx_u.lcb;
7443         ndlp = lcb_context->ndlp;
7444         memset(&pmb->ctx_u, 0, sizeof(pmb->ctx_u));
7445         pmb->ctx_buf = NULL;
7446
7447         shdr = (union lpfc_sli4_cfg_shdr *)
7448                         &pmb->u.mqe.un.beacon_config.header.cfg_shdr;
7449         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7450         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
7451
7452         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX,
7453                                 "0194 SET_BEACON_CONFIG mailbox "
7454                                 "completed with status x%x add_status x%x,"
7455                                 " mbx status x%x\n",
7456                                 shdr_status, shdr_add_status, mb->mbxStatus);
7457
7458         if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status ||
7459             (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) ||
7460             (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) {
7461                 mempool_free(pmb, phba->mbox_mem_pool);
7462                 goto error;
7463         }
7464
7465         mempool_free(pmb, phba->mbox_mem_pool);
7466         cmdsize = sizeof(struct fc_lcb_res_frame);
7467         elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7468                         lpfc_max_els_tries, ndlp,
7469                         ndlp->nlp_DID, ELS_CMD_ACC);
7470
7471         /* Decrement the ndlp reference count from previous mbox command */
7472         lpfc_nlp_put(ndlp);
7473
7474         if (!elsiocb)
7475                 goto free_lcb_context;
7476
7477         lcb_res = (struct fc_lcb_res_frame *)elsiocb->cmd_dmabuf->virt;
7478
7479         memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame));
7480
7481         if (phba->sli_rev == LPFC_SLI_REV4) {
7482                 wqe = &elsiocb->wqe;
7483                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
7484                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7485                        lcb_context->ox_id);
7486         } else {
7487                 icmd = &elsiocb->iocb;
7488                 icmd->ulpContext = lcb_context->rx_id;
7489                 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
7490         }
7491
7492         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7493         *((uint32_t *)(pcmd)) = ELS_CMD_ACC;
7494         lcb_res->lcb_sub_command = lcb_context->sub_command;
7495         lcb_res->lcb_type = lcb_context->type;
7496         lcb_res->capability = lcb_context->capability;
7497         lcb_res->lcb_frequency = lcb_context->frequency;
7498         lcb_res->lcb_duration = lcb_context->duration;
7499         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7500         phba->fc_stat.elsXmitACC++;
7501
7502         elsiocb->ndlp = lpfc_nlp_get(ndlp);
7503         if (!elsiocb->ndlp) {
7504                 lpfc_els_free_iocb(phba, elsiocb);
7505                 goto out;
7506         }
7507
7508         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7509         if (rc == IOCB_ERROR) {
7510                 lpfc_els_free_iocb(phba, elsiocb);
7511                 lpfc_nlp_put(ndlp);
7512         }
7513  out:
7514         kfree(lcb_context);
7515         return;
7516
7517 error:
7518         cmdsize = sizeof(struct fc_lcb_res_frame);
7519         elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7520                                      lpfc_max_els_tries, ndlp,
7521                                      ndlp->nlp_DID, ELS_CMD_LS_RJT);
7522         lpfc_nlp_put(ndlp);
7523         if (!elsiocb)
7524                 goto free_lcb_context;
7525
7526         if (phba->sli_rev == LPFC_SLI_REV4) {
7527                 wqe = &elsiocb->wqe;
7528                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
7529                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7530                        lcb_context->ox_id);
7531         } else {
7532                 icmd = &elsiocb->iocb;
7533                 icmd->ulpContext = lcb_context->rx_id;
7534                 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
7535         }
7536
7537         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7538
7539         *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT;
7540         stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
7541         stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7542
7543         if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE)
7544                 stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
7545
7546         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7547         phba->fc_stat.elsXmitLSRJT++;
7548         elsiocb->ndlp = lpfc_nlp_get(ndlp);
7549         if (!elsiocb->ndlp) {
7550                 lpfc_els_free_iocb(phba, elsiocb);
7551                 goto free_lcb_context;
7552         }
7553
7554         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7555         if (rc == IOCB_ERROR) {
7556                 lpfc_els_free_iocb(phba, elsiocb);
7557                 lpfc_nlp_put(ndlp);
7558         }
7559 free_lcb_context:
7560         kfree(lcb_context);
7561 }
7562
7563 static int
7564 lpfc_sli4_set_beacon(struct lpfc_vport *vport,
7565                      struct lpfc_lcb_context *lcb_context,
7566                      uint32_t beacon_state)
7567 {
7568         struct lpfc_hba *phba = vport->phba;
7569         union lpfc_sli4_cfg_shdr *cfg_shdr;
7570         LPFC_MBOXQ_t *mbox = NULL;
7571         uint32_t len;
7572         int rc;
7573
7574         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7575         if (!mbox)
7576                 return 1;
7577
7578         cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
7579         len = sizeof(struct lpfc_mbx_set_beacon_config) -
7580                 sizeof(struct lpfc_sli4_cfg_mhdr);
7581         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
7582                          LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len,
7583                          LPFC_SLI4_MBX_EMBED);
7584         mbox->ctx_u.lcb = lcb_context;
7585         mbox->vport = phba->pport;
7586         mbox->mbox_cmpl = lpfc_els_lcb_rsp;
7587         bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config,
7588                phba->sli4_hba.physical_port);
7589         bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config,
7590                beacon_state);
7591         mbox->u.mqe.un.beacon_config.word5 = 0;         /* Reserved */
7592
7593         /*
7594          *      Check bv1s bit before issuing the mailbox
7595          *      if bv1s == 1, LCB V1 supported
7596          *      else, LCB V0 supported
7597          */
7598
7599         if (phba->sli4_hba.pc_sli4_params.bv1s) {
7600                 /* COMMON_SET_BEACON_CONFIG_V1 */
7601                 cfg_shdr->request.word9 = BEACON_VERSION_V1;
7602                 lcb_context->capability |= LCB_CAPABILITY_DURATION;
7603                 bf_set(lpfc_mbx_set_beacon_port_type,
7604                        &mbox->u.mqe.un.beacon_config, 0);
7605                 bf_set(lpfc_mbx_set_beacon_duration_v1,
7606                        &mbox->u.mqe.un.beacon_config,
7607                        be16_to_cpu(lcb_context->duration));
7608         } else {
7609                 /* COMMON_SET_BEACON_CONFIG_V0 */
7610                 if (be16_to_cpu(lcb_context->duration) != 0) {
7611                         mempool_free(mbox, phba->mbox_mem_pool);
7612                         return 1;
7613                 }
7614                 cfg_shdr->request.word9 = BEACON_VERSION_V0;
7615                 lcb_context->capability &=  ~(LCB_CAPABILITY_DURATION);
7616                 bf_set(lpfc_mbx_set_beacon_state,
7617                        &mbox->u.mqe.un.beacon_config, beacon_state);
7618                 bf_set(lpfc_mbx_set_beacon_port_type,
7619                        &mbox->u.mqe.un.beacon_config, 1);
7620                 bf_set(lpfc_mbx_set_beacon_duration,
7621                        &mbox->u.mqe.un.beacon_config,
7622                        be16_to_cpu(lcb_context->duration));
7623         }
7624
7625         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
7626         if (rc == MBX_NOT_FINISHED) {
7627                 mempool_free(mbox, phba->mbox_mem_pool);
7628                 return 1;
7629         }
7630
7631         return 0;
7632 }
7633
7634
7635 /**
7636  * lpfc_els_rcv_lcb - Process an unsolicited LCB
7637  * @vport: pointer to a host virtual N_Port data structure.
7638  * @cmdiocb: pointer to lpfc command iocb data structure.
7639  * @ndlp: pointer to a node-list data structure.
7640  *
7641  * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB.
7642  * First, the payload of the unsolicited LCB is checked.
7643  * Then based on Subcommand beacon will either turn on or off.
7644  *
7645  * Return code
7646  * 0 - Sent the acc response
7647  * 1 - Sent the reject response.
7648  **/
7649 static int
7650 lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7651                  struct lpfc_nodelist *ndlp)
7652 {
7653         struct lpfc_hba *phba = vport->phba;
7654         struct lpfc_dmabuf *pcmd;
7655         uint8_t *lp;
7656         struct fc_lcb_request_frame *beacon;
7657         struct lpfc_lcb_context *lcb_context;
7658         u8 state, rjt_err = 0;
7659         struct ls_rjt stat;
7660
7661         pcmd = cmdiocb->cmd_dmabuf;
7662         lp = (uint8_t *)pcmd->virt;
7663         beacon = (struct fc_lcb_request_frame *)pcmd->virt;
7664
7665         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7666                         "0192 ELS LCB Data x%x x%x x%x x%x sub x%x "
7667                         "type x%x frequency %x duration x%x\n",
7668                         lp[0], lp[1], lp[2],
7669                         beacon->lcb_command,
7670                         beacon->lcb_sub_command,
7671                         beacon->lcb_type,
7672                         beacon->lcb_frequency,
7673                         be16_to_cpu(beacon->lcb_duration));
7674
7675         if (beacon->lcb_sub_command != LPFC_LCB_ON &&
7676             beacon->lcb_sub_command != LPFC_LCB_OFF) {
7677                 rjt_err = LSRJT_CMD_UNSUPPORTED;
7678                 goto rjt;
7679         }
7680
7681         if (phba->sli_rev < LPFC_SLI_REV4  ||
7682             test_bit(HBA_FCOE_MODE, &phba->hba_flag) ||
7683             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
7684             LPFC_SLI_INTF_IF_TYPE_2)) {
7685                 rjt_err = LSRJT_CMD_UNSUPPORTED;
7686                 goto rjt;
7687         }
7688
7689         lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL);
7690         if (!lcb_context) {
7691                 rjt_err = LSRJT_UNABLE_TPC;
7692                 goto rjt;
7693         }
7694
7695         state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0;
7696         lcb_context->sub_command = beacon->lcb_sub_command;
7697         lcb_context->capability = 0;
7698         lcb_context->type = beacon->lcb_type;
7699         lcb_context->frequency = beacon->lcb_frequency;
7700         lcb_context->duration = beacon->lcb_duration;
7701         lcb_context->ox_id = get_job_rcvoxid(phba, cmdiocb);
7702         lcb_context->rx_id = get_job_ulpcontext(phba, cmdiocb);
7703         lcb_context->ndlp = lpfc_nlp_get(ndlp);
7704         if (!lcb_context->ndlp) {
7705                 rjt_err = LSRJT_UNABLE_TPC;
7706                 goto rjt_free;
7707         }
7708
7709         if (lpfc_sli4_set_beacon(vport, lcb_context, state)) {
7710                 lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT,
7711                                  "0193 failed to send mail box");
7712                 lpfc_nlp_put(ndlp);
7713                 rjt_err = LSRJT_UNABLE_TPC;
7714                 goto rjt_free;
7715         }
7716         return 0;
7717
7718 rjt_free:
7719         kfree(lcb_context);
7720 rjt:
7721         memset(&stat, 0, sizeof(stat));
7722         stat.un.b.lsRjtRsnCode = rjt_err;
7723         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7724         return 1;
7725 }
7726
7727
7728 /**
7729  * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
7730  * @vport: pointer to a host virtual N_Port data structure.
7731  *
7732  * This routine cleans up any Registration State Change Notification
7733  * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
7734  * @vport together with the host_lock is used to prevent multiple thread
7735  * trying to access the RSCN array on a same @vport at the same time.
7736  **/
7737 void
7738 lpfc_els_flush_rscn(struct lpfc_vport *vport)
7739 {
7740         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7741         struct lpfc_hba  *phba = vport->phba;
7742         int i;
7743
7744         spin_lock_irq(shost->host_lock);
7745         if (vport->fc_rscn_flush) {
7746                 /* Another thread is walking fc_rscn_id_list on this vport */
7747                 spin_unlock_irq(shost->host_lock);
7748                 return;
7749         }
7750         /* Indicate we are walking lpfc_els_flush_rscn on this vport */
7751         vport->fc_rscn_flush = 1;
7752         spin_unlock_irq(shost->host_lock);
7753
7754         for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
7755                 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
7756                 vport->fc_rscn_id_list[i] = NULL;
7757         }
7758         clear_bit(FC_RSCN_MODE, &vport->fc_flag);
7759         clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
7760         spin_lock_irq(shost->host_lock);
7761         vport->fc_rscn_id_cnt = 0;
7762         spin_unlock_irq(shost->host_lock);
7763         lpfc_can_disctmo(vport);
7764         /* Indicate we are done walking this fc_rscn_id_list */
7765         vport->fc_rscn_flush = 0;
7766 }
7767
7768 /**
7769  * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
7770  * @vport: pointer to a host virtual N_Port data structure.
7771  * @did: remote destination port identifier.
7772  *
7773  * This routine checks whether there is any pending Registration State
7774  * Configuration Notification (RSCN) to a @did on @vport.
7775  *
7776  * Return code
7777  *   None zero - The @did matched with a pending rscn
7778  *   0 - not able to match @did with a pending rscn
7779  **/
7780 int
7781 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
7782 {
7783         D_ID ns_did;
7784         D_ID rscn_did;
7785         uint32_t *lp;
7786         uint32_t payload_len, i;
7787         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7788
7789         ns_did.un.word = did;
7790
7791         /* Never match fabric nodes for RSCNs */
7792         if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
7793                 return 0;
7794
7795         /* If we are doing a FULL RSCN rediscovery, match everything */
7796         if (test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag))
7797                 return did;
7798
7799         spin_lock_irq(shost->host_lock);
7800         if (vport->fc_rscn_flush) {
7801                 /* Another thread is walking fc_rscn_id_list on this vport */
7802                 spin_unlock_irq(shost->host_lock);
7803                 return 0;
7804         }
7805         /* Indicate we are walking fc_rscn_id_list on this vport */
7806         vport->fc_rscn_flush = 1;
7807         spin_unlock_irq(shost->host_lock);
7808         for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
7809                 lp = vport->fc_rscn_id_list[i]->virt;
7810                 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
7811                 payload_len -= sizeof(uint32_t);        /* take off word 0 */
7812                 while (payload_len) {
7813                         rscn_did.un.word = be32_to_cpu(*lp++);
7814                         payload_len -= sizeof(uint32_t);
7815                         switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
7816                         case RSCN_ADDRESS_FORMAT_PORT:
7817                                 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
7818                                     && (ns_did.un.b.area == rscn_did.un.b.area)
7819                                     && (ns_did.un.b.id == rscn_did.un.b.id))
7820                                         goto return_did_out;
7821                                 break;
7822                         case RSCN_ADDRESS_FORMAT_AREA:
7823                                 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
7824                                     && (ns_did.un.b.area == rscn_did.un.b.area))
7825                                         goto return_did_out;
7826                                 break;
7827                         case RSCN_ADDRESS_FORMAT_DOMAIN:
7828                                 if (ns_did.un.b.domain == rscn_did.un.b.domain)
7829                                         goto return_did_out;
7830                                 break;
7831                         case RSCN_ADDRESS_FORMAT_FABRIC:
7832                                 goto return_did_out;
7833                         }
7834                 }
7835         }
7836         /* Indicate we are done with walking fc_rscn_id_list on this vport */
7837         vport->fc_rscn_flush = 0;
7838         return 0;
7839 return_did_out:
7840         /* Indicate we are done with walking fc_rscn_id_list on this vport */
7841         vport->fc_rscn_flush = 0;
7842         return did;
7843 }
7844
7845 /**
7846  * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
7847  * @vport: pointer to a host virtual N_Port data structure.
7848  *
7849  * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
7850  * state machine for a @vport's nodes that are with pending RSCN (Registration
7851  * State Change Notification).
7852  *
7853  * Return code
7854  *   0 - Successful (currently alway return 0)
7855  **/
7856 static int
7857 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
7858 {
7859         struct lpfc_nodelist *ndlp = NULL, *n;
7860
7861         /* Move all affected nodes by pending RSCNs to NPR state. */
7862         list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) {
7863                 if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
7864                     !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
7865                         continue;
7866
7867                 /* NVME Target mode does not do RSCN Recovery. */
7868                 if (vport->phba->nvmet_support)
7869                         continue;
7870
7871                 /* If we are in the process of doing discovery on this
7872                  * NPort, let it continue on its own.
7873                  */
7874                 switch (ndlp->nlp_state) {
7875                 case  NLP_STE_PLOGI_ISSUE:
7876                 case  NLP_STE_ADISC_ISSUE:
7877                 case  NLP_STE_REG_LOGIN_ISSUE:
7878                 case  NLP_STE_PRLI_ISSUE:
7879                 case  NLP_STE_LOGO_ISSUE:
7880                         continue;
7881                 }
7882
7883                 lpfc_disc_state_machine(vport, ndlp, NULL,
7884                                         NLP_EVT_DEVICE_RECOVERY);
7885                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
7886         }
7887         return 0;
7888 }
7889
7890 /**
7891  * lpfc_send_rscn_event - Send an RSCN event to management application
7892  * @vport: pointer to a host virtual N_Port data structure.
7893  * @cmdiocb: pointer to lpfc command iocb data structure.
7894  *
7895  * lpfc_send_rscn_event sends an RSCN netlink event to management
7896  * applications.
7897  */
7898 static void
7899 lpfc_send_rscn_event(struct lpfc_vport *vport,
7900                 struct lpfc_iocbq *cmdiocb)
7901 {
7902         struct lpfc_dmabuf *pcmd;
7903         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7904         uint32_t *payload_ptr;
7905         uint32_t payload_len;
7906         struct lpfc_rscn_event_header *rscn_event_data;
7907
7908         pcmd = cmdiocb->cmd_dmabuf;
7909         payload_ptr = (uint32_t *) pcmd->virt;
7910         payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
7911
7912         rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
7913                 payload_len, GFP_KERNEL);
7914         if (!rscn_event_data) {
7915                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
7916                         "0147 Failed to allocate memory for RSCN event\n");
7917                 return;
7918         }
7919         rscn_event_data->event_type = FC_REG_RSCN_EVENT;
7920         rscn_event_data->payload_length = payload_len;
7921         memcpy(rscn_event_data->rscn_payload, payload_ptr,
7922                 payload_len);
7923
7924         fc_host_post_vendor_event(shost,
7925                 fc_get_event_number(),
7926                 sizeof(struct lpfc_rscn_event_header) + payload_len,
7927                 (char *)rscn_event_data,
7928                 LPFC_NL_VENDOR_ID);
7929
7930         kfree(rscn_event_data);
7931 }
7932
7933 /**
7934  * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
7935  * @vport: pointer to a host virtual N_Port data structure.
7936  * @cmdiocb: pointer to lpfc command iocb data structure.
7937  * @ndlp: pointer to a node-list data structure.
7938  *
7939  * This routine processes an unsolicited RSCN (Registration State Change
7940  * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
7941  * to invoke fc_host_post_event() routine to the FC transport layer. If the
7942  * discover state machine is about to begin discovery, it just accepts the
7943  * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
7944  * contains N_Port IDs for other vports on this HBA, it just accepts the
7945  * RSCN and ignore processing it. If the state machine is in the recovery
7946  * state, the fc_rscn_id_list of this @vport is walked and the
7947  * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
7948  * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
7949  * routine is invoked to handle the RSCN event.
7950  *
7951  * Return code
7952  *   0 - Just sent the acc response
7953  *   1 - Sent the acc response and waited for name server completion
7954  **/
7955 static int
7956 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7957                   struct lpfc_nodelist *ndlp)
7958 {
7959         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7960         struct lpfc_hba  *phba = vport->phba;
7961         struct lpfc_dmabuf *pcmd;
7962         uint32_t *lp, *datap;
7963         uint32_t payload_len, length, nportid, *cmd;
7964         int rscn_cnt;
7965         int rscn_id = 0, hba_id = 0;
7966         int i, tmo;
7967
7968         pcmd = cmdiocb->cmd_dmabuf;
7969         lp = (uint32_t *) pcmd->virt;
7970
7971         payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
7972         payload_len -= sizeof(uint32_t);        /* take off word 0 */
7973         /* RSCN received */
7974         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
7975                          "0214 RSCN received Data: x%lx x%x x%x x%x\n",
7976                          vport->fc_flag, payload_len, *lp,
7977                          vport->fc_rscn_id_cnt);
7978
7979         /* Send an RSCN event to the management application */
7980         lpfc_send_rscn_event(vport, cmdiocb);
7981
7982         for (i = 0; i < payload_len/sizeof(uint32_t); i++)
7983                 fc_host_post_event(shost, fc_get_event_number(),
7984                         FCH_EVT_RSCN, lp[i]);
7985
7986         /* Check if RSCN is coming from a direct-connected remote NPort */
7987         if (test_bit(FC_PT2PT, &vport->fc_flag)) {
7988                 /* If so, just ACC it, no other action needed for now */
7989                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7990                                  "2024 pt2pt RSCN %08x Data: x%lx x%x\n",
7991                                  *lp, vport->fc_flag, payload_len);
7992                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
7993
7994                 /* Check to see if we need to NVME rescan this target
7995                  * remoteport.
7996                  */
7997                 if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
7998                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
7999                         lpfc_nvme_rescan_port(vport, ndlp);
8000                 return 0;
8001         }
8002
8003         /* If we are about to begin discovery, just ACC the RSCN.
8004          * Discovery processing will satisfy it.
8005          */
8006         if (vport->port_state <= LPFC_NS_QRY) {
8007                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8008                         "RCV RSCN ignore: did:x%x/ste:x%x flg:x%lx",
8009                         ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
8010
8011                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8012                 return 0;
8013         }
8014
8015         /* If this RSCN just contains NPortIDs for other vports on this HBA,
8016          * just ACC and ignore it.
8017          */
8018         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
8019                 !(vport->cfg_peer_port_login)) {
8020                 i = payload_len;
8021                 datap = lp;
8022                 while (i > 0) {
8023                         nportid = *datap++;
8024                         nportid = ((be32_to_cpu(nportid)) & Mask_DID);
8025                         i -= sizeof(uint32_t);
8026                         rscn_id++;
8027                         if (lpfc_find_vport_by_did(phba, nportid))
8028                                 hba_id++;
8029                 }
8030                 if (rscn_id == hba_id) {
8031                         /* ALL NPortIDs in RSCN are on HBA */
8032                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8033                                          "0219 Ignore RSCN "
8034                                          "Data: x%lx x%x x%x x%x\n",
8035                                          vport->fc_flag, payload_len,
8036                                          *lp, vport->fc_rscn_id_cnt);
8037                         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8038                                 "RCV RSCN vport:  did:x%x/ste:x%x flg:x%lx",
8039                                 ndlp->nlp_DID, vport->port_state,
8040                                 ndlp->nlp_flag);
8041
8042                         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
8043                                 ndlp, NULL);
8044                         /* Restart disctmo if its already running */
8045                         if (test_bit(FC_DISC_TMO, &vport->fc_flag)) {
8046                                 tmo = ((phba->fc_ratov * 3) + 3);
8047                                 mod_timer(&vport->fc_disctmo,
8048                                           jiffies +
8049                                           msecs_to_jiffies(1000 * tmo));
8050                         }
8051                         return 0;
8052                 }
8053         }
8054
8055         spin_lock_irq(shost->host_lock);
8056         if (vport->fc_rscn_flush) {
8057                 /* Another thread is walking fc_rscn_id_list on this vport */
8058                 spin_unlock_irq(shost->host_lock);
8059                 set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
8060                 /* Send back ACC */
8061                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8062                 return 0;
8063         }
8064         /* Indicate we are walking fc_rscn_id_list on this vport */
8065         vport->fc_rscn_flush = 1;
8066         spin_unlock_irq(shost->host_lock);
8067         /* Get the array count after successfully have the token */
8068         rscn_cnt = vport->fc_rscn_id_cnt;
8069         /* If we are already processing an RSCN, save the received
8070          * RSCN payload buffer, cmdiocb->cmd_dmabuf to process later.
8071          */
8072         if (test_bit(FC_RSCN_MODE, &vport->fc_flag) ||
8073             test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) {
8074                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8075                         "RCV RSCN defer:  did:x%x/ste:x%x flg:x%lx",
8076                         ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
8077
8078                 set_bit(FC_RSCN_DEFERRED, &vport->fc_flag);
8079
8080                 /* Restart disctmo if its already running */
8081                 if (test_bit(FC_DISC_TMO, &vport->fc_flag)) {
8082                         tmo = ((phba->fc_ratov * 3) + 3);
8083                         mod_timer(&vport->fc_disctmo,
8084                                   jiffies + msecs_to_jiffies(1000 * tmo));
8085                 }
8086                 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
8087                     !test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) {
8088                         set_bit(FC_RSCN_MODE, &vport->fc_flag);
8089                         if (rscn_cnt) {
8090                                 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
8091                                 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
8092                         }
8093                         if ((rscn_cnt) &&
8094                             (payload_len + length <= LPFC_BPL_SIZE)) {
8095                                 *cmd &= ELS_CMD_MASK;
8096                                 *cmd |= cpu_to_be32(payload_len + length);
8097                                 memcpy(((uint8_t *)cmd) + length, lp,
8098                                        payload_len);
8099                         } else {
8100                                 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
8101                                 vport->fc_rscn_id_cnt++;
8102                                 /* If we zero, cmdiocb->cmd_dmabuf, the calling
8103                                  * routine will not try to free it.
8104                                  */
8105                                 cmdiocb->cmd_dmabuf = NULL;
8106                         }
8107                         /* Deferred RSCN */
8108                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8109                                          "0235 Deferred RSCN "
8110                                          "Data: x%x x%lx x%x\n",
8111                                          vport->fc_rscn_id_cnt, vport->fc_flag,
8112                                          vport->port_state);
8113                 } else {
8114                         set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
8115                         /* ReDiscovery RSCN */
8116                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8117                                          "0234 ReDiscovery RSCN "
8118                                          "Data: x%x x%lx x%x\n",
8119                                          vport->fc_rscn_id_cnt, vport->fc_flag,
8120                                          vport->port_state);
8121                 }
8122                 /* Indicate we are done walking fc_rscn_id_list on this vport */
8123                 vport->fc_rscn_flush = 0;
8124                 /* Send back ACC */
8125                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8126                 /* send RECOVERY event for ALL nodes that match RSCN payload */
8127                 lpfc_rscn_recovery_check(vport);
8128                 return 0;
8129         }
8130         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8131                 "RCV RSCN:        did:x%x/ste:x%x flg:x%lx",
8132                 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
8133
8134         set_bit(FC_RSCN_MODE, &vport->fc_flag);
8135         vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
8136         /* Indicate we are done walking fc_rscn_id_list on this vport */
8137         vport->fc_rscn_flush = 0;
8138         /*
8139          * If we zero, cmdiocb->cmd_dmabuf, the calling routine will
8140          * not try to free it.
8141          */
8142         cmdiocb->cmd_dmabuf = NULL;
8143         lpfc_set_disctmo(vport);
8144         /* Send back ACC */
8145         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8146         /* send RECOVERY event for ALL nodes that match RSCN payload */
8147         lpfc_rscn_recovery_check(vport);
8148         return lpfc_els_handle_rscn(vport);
8149 }
8150
8151 /**
8152  * lpfc_els_handle_rscn - Handle rscn for a vport
8153  * @vport: pointer to a host virtual N_Port data structure.
8154  *
8155  * This routine handles the Registration State Configuration Notification
8156  * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
8157  * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
8158  * if the ndlp to NameServer exists, a Common Transport (CT) command to the
8159  * NameServer shall be issued. If CT command to the NameServer fails to be
8160  * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
8161  * RSCN activities with the @vport.
8162  *
8163  * Return code
8164  *   0 - Cleaned up rscn on the @vport
8165  *   1 - Wait for plogi to name server before proceed
8166  **/
8167 int
8168 lpfc_els_handle_rscn(struct lpfc_vport *vport)
8169 {
8170         struct lpfc_nodelist *ndlp;
8171         struct lpfc_hba  *phba = vport->phba;
8172
8173         /* Ignore RSCN if the port is being torn down. */
8174         if (test_bit(FC_UNLOADING, &vport->load_flag)) {
8175                 lpfc_els_flush_rscn(vport);
8176                 return 0;
8177         }
8178
8179         /* Start timer for RSCN processing */
8180         lpfc_set_disctmo(vport);
8181
8182         /* RSCN processed */
8183         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8184                          "0215 RSCN processed Data: x%lx x%x x%x x%x x%x x%x\n",
8185                          vport->fc_flag, 0, vport->fc_rscn_id_cnt,
8186                          vport->port_state, vport->num_disc_nodes,
8187                          vport->gidft_inp);
8188
8189         /* To process RSCN, first compare RSCN data with NameServer */
8190         vport->fc_ns_retry = 0;
8191         vport->num_disc_nodes = 0;
8192
8193         ndlp = lpfc_findnode_did(vport, NameServer_DID);
8194         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
8195                 /* Good ndlp, issue CT Request to NameServer.  Need to
8196                  * know how many gidfts were issued.  If none, then just
8197                  * flush the RSCN.  Otherwise, the outstanding requests
8198                  * need to complete.
8199                  */
8200                 if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) {
8201                         if (lpfc_issue_gidft(vport) > 0)
8202                                 return 1;
8203                 } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) {
8204                         if (lpfc_issue_gidpt(vport) > 0)
8205                                 return 1;
8206                 } else {
8207                         return 1;
8208                 }
8209         } else {
8210                 /* Nameserver login in question.  Revalidate. */
8211                 if (ndlp) {
8212                         ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
8213                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
8214                 } else {
8215                         ndlp = lpfc_nlp_init(vport, NameServer_DID);
8216                         if (!ndlp) {
8217                                 lpfc_els_flush_rscn(vport);
8218                                 return 0;
8219                         }
8220                         ndlp->nlp_prev_state = ndlp->nlp_state;
8221                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
8222                 }
8223                 ndlp->nlp_type |= NLP_FABRIC;
8224                 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
8225                 /* Wait for NameServer login cmpl before we can
8226                  * continue
8227                  */
8228                 return 1;
8229         }
8230
8231         lpfc_els_flush_rscn(vport);
8232         return 0;
8233 }
8234
8235 /**
8236  * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
8237  * @vport: pointer to a host virtual N_Port data structure.
8238  * @cmdiocb: pointer to lpfc command iocb data structure.
8239  * @ndlp: pointer to a node-list data structure.
8240  *
8241  * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
8242  * unsolicited event. An unsolicited FLOGI can be received in a point-to-
8243  * point topology. As an unsolicited FLOGI should not be received in a loop
8244  * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
8245  * lpfc_check_sparm() routine is invoked to check the parameters in the
8246  * unsolicited FLOGI. If parameters validation failed, the routine
8247  * lpfc_els_rsp_reject() shall be called with reject reason code set to
8248  * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
8249  * FLOGI shall be compared with the Port WWN of the @vport to determine who
8250  * will initiate PLOGI. The higher lexicographical value party shall has
8251  * higher priority (as the winning port) and will initiate PLOGI and
8252  * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
8253  * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
8254  * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
8255  *
8256  * Return code
8257  *   0 - Successfully processed the unsolicited flogi
8258  *   1 - Failed to process the unsolicited flogi
8259  **/
8260 static int
8261 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8262                    struct lpfc_nodelist *ndlp)
8263 {
8264         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
8265         struct lpfc_hba  *phba = vport->phba;
8266         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
8267         uint32_t *lp = (uint32_t *) pcmd->virt;
8268         union lpfc_wqe128 *wqe = &cmdiocb->wqe;
8269         struct serv_parm *sp;
8270         LPFC_MBOXQ_t *mbox;
8271         uint32_t cmd, did;
8272         int rc;
8273         unsigned long fc_flag = 0;
8274         uint32_t port_state = 0;
8275
8276         /* Clear external loopback plug detected flag */
8277         phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
8278
8279         cmd = *lp++;
8280         sp = (struct serv_parm *) lp;
8281
8282         /* FLOGI received */
8283
8284         lpfc_set_disctmo(vport);
8285
8286         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
8287                 /* We should never receive a FLOGI in loop mode, ignore it */
8288                 did =  bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
8289
8290                 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
8291                    Loop Mode */
8292                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8293                                  "0113 An FLOGI ELS command x%x was "
8294                                  "received from DID x%x in Loop Mode\n",
8295                                  cmd, did);
8296                 return 1;
8297         }
8298
8299         (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1);
8300
8301         /*
8302          * If our portname is greater than the remote portname,
8303          * then we initiate Nport login.
8304          */
8305
8306         rc = memcmp(&vport->fc_portname, &sp->portName,
8307                     sizeof(struct lpfc_name));
8308
8309         if (!rc) {
8310                 if (phba->sli_rev < LPFC_SLI_REV4) {
8311                         mbox = mempool_alloc(phba->mbox_mem_pool,
8312                                              GFP_KERNEL);
8313                         if (!mbox)
8314                                 return 1;
8315                         lpfc_linkdown(phba);
8316                         lpfc_init_link(phba, mbox,
8317                                        phba->cfg_topology,
8318                                        phba->cfg_link_speed);
8319                         mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
8320                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
8321                         mbox->vport = vport;
8322                         rc = lpfc_sli_issue_mbox(phba, mbox,
8323                                                  MBX_NOWAIT);
8324                         lpfc_set_loopback_flag(phba);
8325                         if (rc == MBX_NOT_FINISHED)
8326                                 mempool_free(mbox, phba->mbox_mem_pool);
8327                         return 1;
8328                 }
8329
8330                 /* External loopback plug insertion detected */
8331                 phba->link_flag |= LS_EXTERNAL_LOOPBACK;
8332
8333                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_LIBDFC,
8334                                  "1119 External Loopback plug detected\n");
8335
8336                 /* abort the flogi coming back to ourselves
8337                  * due to external loopback on the port.
8338                  */
8339                 lpfc_els_abort_flogi(phba);
8340                 return 0;
8341
8342         } else if (rc > 0) {    /* greater than */
8343                 set_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
8344
8345                 /* If we have the high WWPN we can assign our own
8346                  * myDID; otherwise, we have to WAIT for a PLOGI
8347                  * from the remote NPort to find out what it
8348                  * will be.
8349                  */
8350                 vport->fc_myDID = PT2PT_LocalID;
8351         } else {
8352                 vport->fc_myDID = PT2PT_RemoteID;
8353         }
8354
8355         /*
8356          * The vport state should go to LPFC_FLOGI only
8357          * AFTER we issue a FLOGI, not receive one.
8358          */
8359         spin_lock_irq(shost->host_lock);
8360         fc_flag = vport->fc_flag;
8361         port_state = vport->port_state;
8362         /* Acking an unsol FLOGI.  Count 1 for link bounce
8363          * work-around.
8364          */
8365         vport->rcv_flogi_cnt++;
8366         spin_unlock_irq(shost->host_lock);
8367         set_bit(FC_PT2PT, &vport->fc_flag);
8368         clear_bit(FC_FABRIC, &vport->fc_flag);
8369         clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
8370         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8371                          "3311 Rcv Flogi PS x%x new PS x%x "
8372                          "fc_flag x%lx new fc_flag x%lx\n",
8373                          port_state, vport->port_state,
8374                          fc_flag, vport->fc_flag);
8375
8376         /*
8377          * We temporarily set fc_myDID to make it look like we are
8378          * a Fabric. This is done just so we end up with the right
8379          * did / sid on the FLOGI ACC rsp.
8380          */
8381         did = vport->fc_myDID;
8382         vport->fc_myDID = Fabric_DID;
8383
8384         memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
8385
8386         /* Defer ACC response until AFTER we issue a FLOGI */
8387         if (!test_bit(HBA_FLOGI_ISSUED, &phba->hba_flag)) {
8388                 phba->defer_flogi_acc.rx_id = bf_get(wqe_ctxt_tag,
8389                                                      &wqe->xmit_els_rsp.wqe_com);
8390                 phba->defer_flogi_acc.ox_id = bf_get(wqe_rcvoxid,
8391                                                      &wqe->xmit_els_rsp.wqe_com);
8392
8393                 vport->fc_myDID = did;
8394
8395                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8396                                  "3344 Deferring FLOGI ACC: rx_id: x%x,"
8397                                  " ox_id: x%x, hba_flag x%lx\n",
8398                                  phba->defer_flogi_acc.rx_id,
8399                                  phba->defer_flogi_acc.ox_id, phba->hba_flag);
8400
8401                 phba->defer_flogi_acc.flag = true;
8402
8403                 /* This nlp_get is paired with nlp_puts that reset the
8404                  * defer_flogi_acc.flag back to false.  We need to retain
8405                  * a kref on the ndlp until the deferred FLOGI ACC is
8406                  * processed or cancelled.
8407                  */
8408                 phba->defer_flogi_acc.ndlp = lpfc_nlp_get(ndlp);
8409                 return 0;
8410         }
8411
8412         /* Send back ACC */
8413         lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL);
8414
8415         /* Now lets put fc_myDID back to what its supposed to be */
8416         vport->fc_myDID = did;
8417
8418         return 0;
8419 }
8420
8421 /**
8422  * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
8423  * @vport: pointer to a host virtual N_Port data structure.
8424  * @cmdiocb: pointer to lpfc command iocb data structure.
8425  * @ndlp: pointer to a node-list data structure.
8426  *
8427  * This routine processes Request Node Identification Data (RNID) IOCB
8428  * received as an ELS unsolicited event. Only when the RNID specified format
8429  * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
8430  * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
8431  * Accept (ACC) the RNID ELS command. All the other RNID formats are
8432  * rejected by invoking the lpfc_els_rsp_reject() routine.
8433  *
8434  * Return code
8435  *   0 - Successfully processed rnid iocb (currently always return 0)
8436  **/
8437 static int
8438 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8439                   struct lpfc_nodelist *ndlp)
8440 {
8441         struct lpfc_dmabuf *pcmd;
8442         uint32_t *lp;
8443         RNID *rn;
8444         struct ls_rjt stat;
8445
8446         pcmd = cmdiocb->cmd_dmabuf;
8447         lp = (uint32_t *) pcmd->virt;
8448
8449         lp++;
8450         rn = (RNID *) lp;
8451
8452         /* RNID received */
8453
8454         switch (rn->Format) {
8455         case 0:
8456         case RNID_TOPOLOGY_DISC:
8457                 /* Send back ACC */
8458                 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
8459                 break;
8460         default:
8461                 /* Reject this request because format not supported */
8462                 stat.un.b.lsRjtRsvd0 = 0;
8463                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8464                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8465                 stat.un.b.vendorUnique = 0;
8466                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
8467                         NULL);
8468         }
8469         return 0;
8470 }
8471
8472 /**
8473  * lpfc_els_rcv_echo - Process an unsolicited echo iocb
8474  * @vport: pointer to a host virtual N_Port data structure.
8475  * @cmdiocb: pointer to lpfc command iocb data structure.
8476  * @ndlp: pointer to a node-list data structure.
8477  *
8478  * Return code
8479  *   0 - Successfully processed echo iocb (currently always return 0)
8480  **/
8481 static int
8482 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8483                   struct lpfc_nodelist *ndlp)
8484 {
8485         uint8_t *pcmd;
8486
8487         pcmd = (uint8_t *)cmdiocb->cmd_dmabuf->virt;
8488
8489         /* skip over first word of echo command to find echo data */
8490         pcmd += sizeof(uint32_t);
8491
8492         lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
8493         return 0;
8494 }
8495
8496 /**
8497  * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
8498  * @vport: pointer to a host virtual N_Port data structure.
8499  * @cmdiocb: pointer to lpfc command iocb data structure.
8500  * @ndlp: pointer to a node-list data structure.
8501  *
8502  * This routine processes a Link Incident Report Registration(LIRR) IOCB
8503  * received as an ELS unsolicited event. Currently, this function just invokes
8504  * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
8505  *
8506  * Return code
8507  *   0 - Successfully processed lirr iocb (currently always return 0)
8508  **/
8509 static int
8510 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8511                   struct lpfc_nodelist *ndlp)
8512 {
8513         struct ls_rjt stat;
8514
8515         /* For now, unconditionally reject this command */
8516         stat.un.b.lsRjtRsvd0 = 0;
8517         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8518         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8519         stat.un.b.vendorUnique = 0;
8520         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8521         return 0;
8522 }
8523
8524 /**
8525  * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
8526  * @vport: pointer to a host virtual N_Port data structure.
8527  * @cmdiocb: pointer to lpfc command iocb data structure.
8528  * @ndlp: pointer to a node-list data structure.
8529  *
8530  * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
8531  * received as an ELS unsolicited event. A request to RRQ shall only
8532  * be accepted if the Originator Nx_Port N_Port_ID or the Responder
8533  * Nx_Port N_Port_ID of the target Exchange is the same as the
8534  * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
8535  * not accepted, an LS_RJT with reason code "Unable to perform
8536  * command request" and reason code explanation "Invalid Originator
8537  * S_ID" shall be returned. For now, we just unconditionally accept
8538  * RRQ from the target.
8539  **/
8540 static void
8541 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8542                  struct lpfc_nodelist *ndlp)
8543 {
8544         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8545         if (vport->phba->sli_rev == LPFC_SLI_REV4)
8546                 lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
8547 }
8548
8549 /**
8550  * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
8551  * @phba: pointer to lpfc hba data structure.
8552  * @pmb: pointer to the driver internal queue element for mailbox command.
8553  *
8554  * This routine is the completion callback function for the MBX_READ_LNK_STAT
8555  * mailbox command. This callback function is to actually send the Accept
8556  * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It
8557  * collects the link statistics from the completion of the MBX_READ_LNK_STAT
8558  * mailbox command, constructs the RLS response with the link statistics
8559  * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
8560  * response to the RLS.
8561  *
8562  * Note that the ndlp reference count will be incremented by 1 for holding the
8563  * ndlp and the reference to ndlp will be stored into the ndlp field of
8564  * the IOCB for the completion callback function to the RLS Accept Response
8565  * ELS IOCB command.
8566  *
8567  **/
8568 static void
8569 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
8570 {
8571         int rc = 0;
8572         MAILBOX_t *mb;
8573         IOCB_t *icmd;
8574         union lpfc_wqe128 *wqe;
8575         struct RLS_RSP *rls_rsp;
8576         uint8_t *pcmd;
8577         struct lpfc_iocbq *elsiocb;
8578         struct lpfc_nodelist *ndlp;
8579         uint16_t oxid;
8580         uint16_t rxid;
8581         uint32_t cmdsize;
8582         u32 ulp_context;
8583
8584         mb = &pmb->u.mb;
8585
8586         ndlp = pmb->ctx_ndlp;
8587         rxid = (uint16_t)(pmb->ctx_u.ox_rx_id & 0xffff);
8588         oxid = (uint16_t)((pmb->ctx_u.ox_rx_id >> 16) & 0xffff);
8589         memset(&pmb->ctx_u, 0, sizeof(pmb->ctx_u));
8590         pmb->ctx_ndlp = NULL;
8591
8592         if (mb->mbxStatus) {
8593                 mempool_free(pmb, phba->mbox_mem_pool);
8594                 return;
8595         }
8596
8597         cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
8598         elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
8599                                      lpfc_max_els_tries, ndlp,
8600                                      ndlp->nlp_DID, ELS_CMD_ACC);
8601
8602         /* Decrement the ndlp reference count from previous mbox command */
8603         lpfc_nlp_put(ndlp);
8604
8605         if (!elsiocb) {
8606                 mempool_free(pmb, phba->mbox_mem_pool);
8607                 return;
8608         }
8609
8610         ulp_context = get_job_ulpcontext(phba, elsiocb);
8611         if (phba->sli_rev == LPFC_SLI_REV4) {
8612                 wqe = &elsiocb->wqe;
8613                 /* Xri / rx_id */
8614                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, rxid);
8615                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, oxid);
8616         } else {
8617                 icmd = &elsiocb->iocb;
8618                 icmd->ulpContext = rxid;
8619                 icmd->unsli3.rcvsli3.ox_id = oxid;
8620         }
8621
8622         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8623         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8624         pcmd += sizeof(uint32_t); /* Skip past command */
8625         rls_rsp = (struct RLS_RSP *)pcmd;
8626
8627         rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
8628         rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
8629         rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
8630         rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
8631         rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
8632         rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
8633         mempool_free(pmb, phba->mbox_mem_pool);
8634         /* Xmit ELS RLS ACC response tag <ulpIoTag> */
8635         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
8636                          "2874 Xmit ELS RLS ACC response tag x%x xri x%x, "
8637                          "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x\n",
8638                          elsiocb->iotag, ulp_context,
8639                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
8640                          ndlp->nlp_rpi);
8641         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
8642         phba->fc_stat.elsXmitACC++;
8643         elsiocb->ndlp = lpfc_nlp_get(ndlp);
8644         if (!elsiocb->ndlp) {
8645                 lpfc_els_free_iocb(phba, elsiocb);
8646                 return;
8647         }
8648
8649         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8650         if (rc == IOCB_ERROR) {
8651                 lpfc_els_free_iocb(phba, elsiocb);
8652                 lpfc_nlp_put(ndlp);
8653         }
8654         return;
8655 }
8656
8657 /**
8658  * lpfc_els_rcv_rls - Process an unsolicited rls iocb
8659  * @vport: pointer to a host virtual N_Port data structure.
8660  * @cmdiocb: pointer to lpfc command iocb data structure.
8661  * @ndlp: pointer to a node-list data structure.
8662  *
8663  * This routine processes Read Link Status (RLS) IOCB received as an
8664  * ELS unsolicited event. It first checks the remote port state. If the
8665  * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
8666  * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
8667  * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
8668  * for reading the HBA link statistics. It is for the callback function,
8669  * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
8670  * to actually sending out RPL Accept (ACC) response.
8671  *
8672  * Return codes
8673  *   0 - Successfully processed rls iocb (currently always return 0)
8674  **/
8675 static int
8676 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8677                  struct lpfc_nodelist *ndlp)
8678 {
8679         struct lpfc_hba *phba = vport->phba;
8680         LPFC_MBOXQ_t *mbox;
8681         struct ls_rjt stat;
8682         u32 ctx = get_job_ulpcontext(phba, cmdiocb);
8683         u32 ox_id = get_job_rcvoxid(phba, cmdiocb);
8684
8685         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
8686             (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
8687                 /* reject the unsolicited RLS request and done with it */
8688                 goto reject_out;
8689
8690         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
8691         if (mbox) {
8692                 lpfc_read_lnk_stat(phba, mbox);
8693                 mbox->ctx_u.ox_rx_id = ox_id << 16 | ctx;
8694                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
8695                 if (!mbox->ctx_ndlp)
8696                         goto node_err;
8697                 mbox->vport = vport;
8698                 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
8699                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
8700                         != MBX_NOT_FINISHED)
8701                         /* Mbox completion will send ELS Response */
8702                         return 0;
8703                 /* Decrement reference count used for the failed mbox
8704                  * command.
8705                  */
8706                 lpfc_nlp_put(ndlp);
8707 node_err:
8708                 mempool_free(mbox, phba->mbox_mem_pool);
8709         }
8710 reject_out:
8711         /* issue rejection response */
8712         stat.un.b.lsRjtRsvd0 = 0;
8713         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8714         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8715         stat.un.b.vendorUnique = 0;
8716         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8717         return 0;
8718 }
8719
8720 /**
8721  * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
8722  * @vport: pointer to a host virtual N_Port data structure.
8723  * @cmdiocb: pointer to lpfc command iocb data structure.
8724  * @ndlp: pointer to a node-list data structure.
8725  *
8726  * This routine processes Read Timout Value (RTV) IOCB received as an
8727  * ELS unsolicited event. It first checks the remote port state. If the
8728  * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
8729  * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
8730  * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
8731  * Value (RTV) unsolicited IOCB event.
8732  *
8733  * Note that the ndlp reference count will be incremented by 1 for holding the
8734  * ndlp and the reference to ndlp will be stored into the ndlp field of
8735  * the IOCB for the completion callback function to the RTV Accept Response
8736  * ELS IOCB command.
8737  *
8738  * Return codes
8739  *   0 - Successfully processed rtv iocb (currently always return 0)
8740  **/
8741 static int
8742 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8743                  struct lpfc_nodelist *ndlp)
8744 {
8745         int rc = 0;
8746         IOCB_t *icmd;
8747         union lpfc_wqe128 *wqe;
8748         struct lpfc_hba *phba = vport->phba;
8749         struct ls_rjt stat;
8750         struct RTV_RSP *rtv_rsp;
8751         uint8_t *pcmd;
8752         struct lpfc_iocbq *elsiocb;
8753         uint32_t cmdsize;
8754         u32 ulp_context;
8755
8756         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
8757             (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
8758                 /* reject the unsolicited RTV request and done with it */
8759                 goto reject_out;
8760
8761         cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
8762         elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
8763                                      lpfc_max_els_tries, ndlp,
8764                                      ndlp->nlp_DID, ELS_CMD_ACC);
8765
8766         if (!elsiocb)
8767                 return 1;
8768
8769         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8770         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8771         pcmd += sizeof(uint32_t); /* Skip past command */
8772
8773         ulp_context = get_job_ulpcontext(phba, elsiocb);
8774         /* use the command's xri in the response */
8775         if (phba->sli_rev == LPFC_SLI_REV4) {
8776                 wqe = &elsiocb->wqe;
8777                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
8778                        get_job_ulpcontext(phba, cmdiocb));
8779                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
8780                        get_job_rcvoxid(phba, cmdiocb));
8781         } else {
8782                 icmd = &elsiocb->iocb;
8783                 icmd->ulpContext = get_job_ulpcontext(phba, cmdiocb);
8784                 icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, cmdiocb);
8785         }
8786
8787         rtv_rsp = (struct RTV_RSP *)pcmd;
8788
8789         /* populate RTV payload */
8790         rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
8791         rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
8792         bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
8793         bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
8794         rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
8795
8796         /* Xmit ELS RLS ACC response tag <ulpIoTag> */
8797         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
8798                          "2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
8799                          "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x, "
8800                          "Data: x%x x%x x%x\n",
8801                          elsiocb->iotag, ulp_context,
8802                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
8803                          ndlp->nlp_rpi,
8804                         rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
8805         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
8806         phba->fc_stat.elsXmitACC++;
8807         elsiocb->ndlp = lpfc_nlp_get(ndlp);
8808         if (!elsiocb->ndlp) {
8809                 lpfc_els_free_iocb(phba, elsiocb);
8810                 return 0;
8811         }
8812
8813         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8814         if (rc == IOCB_ERROR) {
8815                 lpfc_els_free_iocb(phba, elsiocb);
8816                 lpfc_nlp_put(ndlp);
8817         }
8818         return 0;
8819
8820 reject_out:
8821         /* issue rejection response */
8822         stat.un.b.lsRjtRsvd0 = 0;
8823         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8824         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8825         stat.un.b.vendorUnique = 0;
8826         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8827         return 0;
8828 }
8829
8830 /* lpfc_issue_els_rrq - Process an unsolicited rrq iocb
8831  * @vport: pointer to a host virtual N_Port data structure.
8832  * @ndlp: pointer to a node-list data structure.
8833  * @did: DID of the target.
8834  * @rrq: Pointer to the rrq struct.
8835  *
8836  * Build a ELS RRQ command and send it to the target. If the issue_iocb is
8837  * successful, the completion handler will clear the RRQ.
8838  *
8839  * Return codes
8840  *   0 - Successfully sent rrq els iocb.
8841  *   1 - Failed to send rrq els iocb.
8842  **/
8843 static int
8844 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
8845                         uint32_t did, struct lpfc_node_rrq *rrq)
8846 {
8847         struct lpfc_hba  *phba = vport->phba;
8848         struct RRQ *els_rrq;
8849         struct lpfc_iocbq *elsiocb;
8850         uint8_t *pcmd;
8851         uint16_t cmdsize;
8852         int ret;
8853
8854         if (!ndlp)
8855                 return 1;
8856
8857         /* If ndlp is not NULL, we will bump the reference count on it */
8858         cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
8859         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
8860                                      ELS_CMD_RRQ);
8861         if (!elsiocb)
8862                 return 1;
8863
8864         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8865
8866         /* For RRQ request, remainder of payload is Exchange IDs */
8867         *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
8868         pcmd += sizeof(uint32_t);
8869         els_rrq = (struct RRQ *) pcmd;
8870
8871         bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]);
8872         bf_set(rrq_rxid, els_rrq, rrq->rxid);
8873         bf_set(rrq_did, els_rrq, vport->fc_myDID);
8874         els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
8875         els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
8876
8877
8878         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
8879                 "Issue RRQ:     did:x%x",
8880                 did, rrq->xritag, rrq->rxid);
8881         elsiocb->context_un.rrq = rrq;
8882         elsiocb->cmd_cmpl = lpfc_cmpl_els_rrq;
8883
8884         elsiocb->ndlp = lpfc_nlp_get(ndlp);
8885         if (!elsiocb->ndlp)
8886                 goto io_err;
8887
8888         ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8889         if (ret == IOCB_ERROR) {
8890                 lpfc_nlp_put(ndlp);
8891                 goto io_err;
8892         }
8893         return 0;
8894
8895  io_err:
8896         lpfc_els_free_iocb(phba, elsiocb);
8897         return 1;
8898 }
8899
8900 /**
8901  * lpfc_send_rrq - Sends ELS RRQ if needed.
8902  * @phba: pointer to lpfc hba data structure.
8903  * @rrq: pointer to the active rrq.
8904  *
8905  * This routine will call the lpfc_issue_els_rrq if the rrq is
8906  * still active for the xri. If this function returns a failure then
8907  * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
8908  *
8909  * Returns 0 Success.
8910  *         1 Failure.
8911  **/
8912 int
8913 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
8914 {
8915         struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
8916                                                        rrq->nlp_DID);
8917         if (!ndlp)
8918                 return 1;
8919
8920         if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
8921                 return lpfc_issue_els_rrq(rrq->vport, ndlp,
8922                                          rrq->nlp_DID, rrq);
8923         else
8924                 return 1;
8925 }
8926
8927 /**
8928  * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
8929  * @vport: pointer to a host virtual N_Port data structure.
8930  * @cmdsize: size of the ELS command.
8931  * @oldiocb: pointer to the original lpfc command iocb data structure.
8932  * @ndlp: pointer to a node-list data structure.
8933  *
8934  * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
8935  * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
8936  *
8937  * Note that the ndlp reference count will be incremented by 1 for holding the
8938  * ndlp and the reference to ndlp will be stored into the ndlp field of
8939  * the IOCB for the completion callback function to the RPL Accept Response
8940  * ELS command.
8941  *
8942  * Return code
8943  *   0 - Successfully issued ACC RPL ELS command
8944  *   1 - Failed to issue ACC RPL ELS command
8945  **/
8946 static int
8947 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
8948                      struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
8949 {
8950         int rc = 0;
8951         struct lpfc_hba *phba = vport->phba;
8952         IOCB_t *icmd;
8953         union lpfc_wqe128 *wqe;
8954         RPL_RSP rpl_rsp;
8955         struct lpfc_iocbq *elsiocb;
8956         uint8_t *pcmd;
8957         u32 ulp_context;
8958
8959         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
8960                                      ndlp->nlp_DID, ELS_CMD_ACC);
8961
8962         if (!elsiocb)
8963                 return 1;
8964
8965         ulp_context = get_job_ulpcontext(phba, elsiocb);
8966         if (phba->sli_rev == LPFC_SLI_REV4) {
8967                 wqe = &elsiocb->wqe;
8968                 /* Xri / rx_id */
8969                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
8970                        get_job_ulpcontext(phba, oldiocb));
8971                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
8972                        get_job_rcvoxid(phba, oldiocb));
8973         } else {
8974                 icmd = &elsiocb->iocb;
8975                 icmd->ulpContext = get_job_ulpcontext(phba, oldiocb);
8976                 icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, oldiocb);
8977         }
8978
8979         pcmd = elsiocb->cmd_dmabuf->virt;
8980         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8981         pcmd += sizeof(uint16_t);
8982         *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
8983         pcmd += sizeof(uint16_t);
8984
8985         /* Setup the RPL ACC payload */
8986         rpl_rsp.listLen = be32_to_cpu(1);
8987         rpl_rsp.index = 0;
8988         rpl_rsp.port_num_blk.portNum = 0;
8989         rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
8990         memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
8991             sizeof(struct lpfc_name));
8992         memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
8993         /* Xmit ELS RPL ACC response tag <ulpIoTag> */
8994         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8995                          "0120 Xmit ELS RPL ACC response tag x%x "
8996                          "xri x%x, did x%x, nlp_flag x%lx, nlp_state x%x, "
8997                          "rpi x%x\n",
8998                          elsiocb->iotag, ulp_context,
8999                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
9000                          ndlp->nlp_rpi);
9001         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
9002         phba->fc_stat.elsXmitACC++;
9003         elsiocb->ndlp = lpfc_nlp_get(ndlp);
9004         if (!elsiocb->ndlp) {
9005                 lpfc_els_free_iocb(phba, elsiocb);
9006                 return 1;
9007         }
9008
9009         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
9010         if (rc == IOCB_ERROR) {
9011                 lpfc_els_free_iocb(phba, elsiocb);
9012                 lpfc_nlp_put(ndlp);
9013                 return 1;
9014         }
9015
9016         return 0;
9017 }
9018
9019 /**
9020  * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
9021  * @vport: pointer to a host virtual N_Port data structure.
9022  * @cmdiocb: pointer to lpfc command iocb data structure.
9023  * @ndlp: pointer to a node-list data structure.
9024  *
9025  * This routine processes Read Port List (RPL) IOCB received as an ELS
9026  * unsolicited event. It first checks the remote port state. If the remote
9027  * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
9028  * invokes the lpfc_els_rsp_reject() routine to send reject response.
9029  * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
9030  * to accept the RPL.
9031  *
9032  * Return code
9033  *   0 - Successfully processed rpl iocb (currently always return 0)
9034  **/
9035 static int
9036 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9037                  struct lpfc_nodelist *ndlp)
9038 {
9039         struct lpfc_dmabuf *pcmd;
9040         uint32_t *lp;
9041         uint32_t maxsize;
9042         uint16_t cmdsize;
9043         RPL *rpl;
9044         struct ls_rjt stat;
9045
9046         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
9047             (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
9048                 /* issue rejection response */
9049                 stat.un.b.lsRjtRsvd0 = 0;
9050                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
9051                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
9052                 stat.un.b.vendorUnique = 0;
9053                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
9054                         NULL);
9055                 /* rejected the unsolicited RPL request and done with it */
9056                 return 0;
9057         }
9058
9059         pcmd = cmdiocb->cmd_dmabuf;
9060         lp = (uint32_t *) pcmd->virt;
9061         rpl = (RPL *) (lp + 1);
9062         maxsize = be32_to_cpu(rpl->maxsize);
9063
9064         /* We support only one port */
9065         if ((rpl->index == 0) &&
9066             ((maxsize == 0) ||
9067              ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
9068                 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
9069         } else {
9070                 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
9071         }
9072         lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
9073
9074         return 0;
9075 }
9076
9077 /**
9078  * lpfc_els_rcv_farp - Process an unsolicited farp request els command
9079  * @vport: pointer to a virtual N_Port data structure.
9080  * @cmdiocb: pointer to lpfc command iocb data structure.
9081  * @ndlp: pointer to a node-list data structure.
9082  *
9083  * This routine processes Fibre Channel Address Resolution Protocol
9084  * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
9085  * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
9086  * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
9087  * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
9088  * remote PortName is compared against the FC PortName stored in the @vport
9089  * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
9090  * compared against the FC NodeName stored in the @vport data structure.
9091  * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
9092  * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
9093  * invoked to send out FARP Response to the remote node. Before sending the
9094  * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
9095  * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
9096  * routine is invoked to log into the remote port first.
9097  *
9098  * Return code
9099  *   0 - Either the FARP Match Mode not supported or successfully processed
9100  **/
9101 static int
9102 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9103                   struct lpfc_nodelist *ndlp)
9104 {
9105         struct lpfc_dmabuf *pcmd;
9106         uint32_t *lp;
9107         FARP *fp;
9108         uint32_t cnt, did;
9109
9110         did = get_job_els_rsp64_did(vport->phba, cmdiocb);
9111         pcmd = cmdiocb->cmd_dmabuf;
9112         lp = (uint32_t *) pcmd->virt;
9113
9114         lp++;
9115         fp = (FARP *) lp;
9116         /* FARP-REQ received from DID <did> */
9117         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9118                          "0601 FARP-REQ received from DID x%x\n", did);
9119         /* We will only support match on WWPN or WWNN */
9120         if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
9121                 return 0;
9122         }
9123
9124         cnt = 0;
9125         /* If this FARP command is searching for my portname */
9126         if (fp->Mflags & FARP_MATCH_PORT) {
9127                 if (memcmp(&fp->RportName, &vport->fc_portname,
9128                            sizeof(struct lpfc_name)) == 0)
9129                         cnt = 1;
9130         }
9131
9132         /* If this FARP command is searching for my nodename */
9133         if (fp->Mflags & FARP_MATCH_NODE) {
9134                 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
9135                            sizeof(struct lpfc_name)) == 0)
9136                         cnt = 1;
9137         }
9138
9139         if (cnt) {
9140                 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
9141                    (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
9142                         /* Log back into the node before sending the FARP. */
9143                         if (fp->Rflags & FARP_REQUEST_PLOGI) {
9144                                 ndlp->nlp_prev_state = ndlp->nlp_state;
9145                                 lpfc_nlp_set_state(vport, ndlp,
9146                                                    NLP_STE_PLOGI_ISSUE);
9147                                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
9148                         }
9149
9150                         /* Send a FARP response to that node */
9151                         if (fp->Rflags & FARP_REQUEST_FARPR)
9152                                 lpfc_issue_els_farpr(vport, did, 0);
9153                 }
9154         }
9155         return 0;
9156 }
9157
9158 /**
9159  * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
9160  * @vport: pointer to a host virtual N_Port data structure.
9161  * @cmdiocb: pointer to lpfc command iocb data structure.
9162  * @ndlp: pointer to a node-list data structure.
9163  *
9164  * This routine processes Fibre Channel Address Resolution Protocol
9165  * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
9166  * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
9167  * the FARP response request.
9168  *
9169  * Return code
9170  *   0 - Successfully processed FARPR IOCB (currently always return 0)
9171  **/
9172 static int
9173 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9174                    struct lpfc_nodelist  *ndlp)
9175 {
9176         uint32_t did;
9177
9178         did = get_job_els_rsp64_did(vport->phba, cmdiocb);
9179
9180         /* FARP-RSP received from DID <did> */
9181         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9182                          "0600 FARP-RSP received from DID x%x\n", did);
9183         /* ACCEPT the Farp resp request */
9184         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
9185
9186         return 0;
9187 }
9188
9189 /**
9190  * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
9191  * @vport: pointer to a host virtual N_Port data structure.
9192  * @cmdiocb: pointer to lpfc command iocb data structure.
9193  * @fan_ndlp: pointer to a node-list data structure.
9194  *
9195  * This routine processes a Fabric Address Notification (FAN) IOCB
9196  * command received as an ELS unsolicited event. The FAN ELS command will
9197  * only be processed on a physical port (i.e., the @vport represents the
9198  * physical port). The fabric NodeName and PortName from the FAN IOCB are
9199  * compared against those in the phba data structure. If any of those is
9200  * different, the lpfc_initial_flogi() routine is invoked to initialize
9201  * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
9202  * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
9203  * is invoked to register login to the fabric.
9204  *
9205  * Return code
9206  *   0 - Successfully processed fan iocb (currently always return 0).
9207  **/
9208 static int
9209 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9210                  struct lpfc_nodelist *fan_ndlp)
9211 {
9212         struct lpfc_hba *phba = vport->phba;
9213         uint32_t *lp;
9214         FAN *fp;
9215
9216         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
9217         lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
9218         fp = (FAN *) ++lp;
9219         /* FAN received; Fan does not have a reply sequence */
9220         if ((vport == phba->pport) &&
9221             (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
9222                 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
9223                             sizeof(struct lpfc_name))) ||
9224                     (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
9225                             sizeof(struct lpfc_name)))) {
9226                         /* This port has switched fabrics. FLOGI is required */
9227                         lpfc_issue_init_vfi(vport);
9228                 } else {
9229                         /* FAN verified - skip FLOGI */
9230                         vport->fc_myDID = vport->fc_prevDID;
9231                         if (phba->sli_rev < LPFC_SLI_REV4)
9232                                 lpfc_issue_fabric_reglogin(vport);
9233                         else {
9234                                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9235                                         "3138 Need register VFI: (x%x/%x)\n",
9236                                         vport->fc_prevDID, vport->fc_myDID);
9237                                 lpfc_issue_reg_vfi(vport);
9238                         }
9239                 }
9240         }
9241         return 0;
9242 }
9243
9244 /**
9245  * lpfc_els_rcv_edc - Process an unsolicited EDC iocb
9246  * @vport: pointer to a host virtual N_Port data structure.
9247  * @cmdiocb: pointer to lpfc command iocb data structure.
9248  * @ndlp: pointer to a node-list data structure.
9249  *
9250  * Return code
9251  *   0 - Successfully processed echo iocb (currently always return 0)
9252  **/
9253 static int
9254 lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9255                  struct lpfc_nodelist *ndlp)
9256 {
9257         struct lpfc_hba  *phba = vport->phba;
9258         struct fc_els_edc *edc_req;
9259         struct fc_tlv_desc *tlv;
9260         uint8_t *payload;
9261         uint32_t *ptr, dtag;
9262         const char *dtag_nm;
9263         int desc_cnt = 0, bytes_remain;
9264         struct fc_diag_lnkflt_desc *plnkflt;
9265
9266         payload = cmdiocb->cmd_dmabuf->virt;
9267
9268         edc_req = (struct fc_els_edc *)payload;
9269         bytes_remain = be32_to_cpu(edc_req->desc_len);
9270
9271         ptr = (uint32_t *)payload;
9272         lpfc_printf_vlog(vport, KERN_INFO,
9273                          LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9274                          "3319 Rcv EDC payload len %d: x%x x%x x%x\n",
9275                          bytes_remain, be32_to_cpu(*ptr),
9276                          be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2)));
9277
9278         /* No signal support unless there is a congestion descriptor */
9279         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
9280         phba->cgn_sig_freq = 0;
9281         phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
9282
9283         if (bytes_remain <= 0)
9284                 goto out;
9285
9286         tlv = edc_req->desc;
9287
9288         /*
9289          * cycle through EDC diagnostic descriptors to find the
9290          * congestion signaling capability descriptor
9291          */
9292         while (bytes_remain) {
9293                 if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
9294                         lpfc_printf_log(phba, KERN_WARNING,
9295                                         LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9296                                         "6464 Truncated TLV hdr on "
9297                                         "Diagnostic descriptor[%d]\n",
9298                                         desc_cnt);
9299                         goto out;
9300                 }
9301
9302                 dtag = be32_to_cpu(tlv->desc_tag);
9303                 switch (dtag) {
9304                 case ELS_DTAG_LNK_FAULT_CAP:
9305                         if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
9306                             FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
9307                                 sizeof(struct fc_diag_lnkflt_desc)) {
9308                                 lpfc_printf_log(phba, KERN_WARNING,
9309                                         LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9310                                         "6465 Truncated Link Fault Diagnostic "
9311                                         "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
9312                                         desc_cnt, bytes_remain,
9313                                         FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
9314                                         sizeof(struct fc_diag_lnkflt_desc));
9315                                 goto out;
9316                         }
9317                         plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
9318                         lpfc_printf_log(phba, KERN_INFO,
9319                                 LOG_ELS | LOG_LDS_EVENT,
9320                                 "4626 Link Fault Desc Data: x%08x len x%x "
9321                                 "da x%x dd x%x interval x%x\n",
9322                                 be32_to_cpu(plnkflt->desc_tag),
9323                                 be32_to_cpu(plnkflt->desc_len),
9324                                 be32_to_cpu(
9325                                         plnkflt->degrade_activate_threshold),
9326                                 be32_to_cpu(
9327                                         plnkflt->degrade_deactivate_threshold),
9328                                 be32_to_cpu(plnkflt->fec_degrade_interval));
9329                         break;
9330                 case ELS_DTAG_CG_SIGNAL_CAP:
9331                         if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
9332                             FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
9333                                 sizeof(struct fc_diag_cg_sig_desc)) {
9334                                 lpfc_printf_log(
9335                                         phba, KERN_WARNING, LOG_CGN_MGMT,
9336                                         "6466 Truncated cgn signal Diagnostic "
9337                                         "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
9338                                         desc_cnt, bytes_remain,
9339                                         FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
9340                                         sizeof(struct fc_diag_cg_sig_desc));
9341                                 goto out;
9342                         }
9343
9344                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
9345                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
9346
9347                         /* We start negotiation with lpfc_fabric_cgn_frequency.
9348                          * When we process the EDC, we will settle on the
9349                          * higher frequency.
9350                          */
9351                         phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
9352
9353                         lpfc_least_capable_settings(
9354                                 phba, (struct fc_diag_cg_sig_desc *)tlv);
9355                         break;
9356                 default:
9357                         dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
9358                         lpfc_printf_log(phba, KERN_WARNING,
9359                                         LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9360                                         "6467 unknown Diagnostic "
9361                                         "Descriptor[%d]: tag x%x (%s)\n",
9362                                         desc_cnt, dtag, dtag_nm);
9363                 }
9364                 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
9365                 tlv = fc_tlv_next_desc(tlv);
9366                 desc_cnt++;
9367         }
9368 out:
9369         /* Need to send back an ACC */
9370         lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp);
9371
9372         lpfc_config_cgn_signal(phba);
9373         return 0;
9374 }
9375
9376 /**
9377  * lpfc_els_timeout - Handler funciton to the els timer
9378  * @t: timer context used to obtain the vport.
9379  *
9380  * This routine is invoked by the ELS timer after timeout. It posts the ELS
9381  * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
9382  * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
9383  * up the worker thread. It is for the worker thread to invoke the routine
9384  * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
9385  **/
9386 void
9387 lpfc_els_timeout(struct timer_list *t)
9388 {
9389         struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc);
9390         struct lpfc_hba   *phba = vport->phba;
9391         uint32_t tmo_posted;
9392         unsigned long iflag;
9393
9394         spin_lock_irqsave(&vport->work_port_lock, iflag);
9395         tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
9396         if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag))
9397                 vport->work_port_events |= WORKER_ELS_TMO;
9398         spin_unlock_irqrestore(&vport->work_port_lock, iflag);
9399
9400         if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag))
9401                 lpfc_worker_wake_up(phba);
9402         return;
9403 }
9404
9405
9406 /**
9407  * lpfc_els_timeout_handler - Process an els timeout event
9408  * @vport: pointer to a virtual N_Port data structure.
9409  *
9410  * This routine is the actual handler function that processes an ELS timeout
9411  * event. It walks the ELS ring to get and abort all the IOCBs (except the
9412  * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
9413  * invoking the lpfc_sli_issue_abort_iotag() routine.
9414  **/
9415 void
9416 lpfc_els_timeout_handler(struct lpfc_vport *vport)
9417 {
9418         struct lpfc_hba  *phba = vport->phba;
9419         struct lpfc_sli_ring *pring;
9420         struct lpfc_iocbq *tmp_iocb, *piocb;
9421         IOCB_t *cmd = NULL;
9422         struct lpfc_dmabuf *pcmd;
9423         uint32_t els_command = 0;
9424         uint32_t timeout;
9425         uint32_t remote_ID = 0xffffffff;
9426         LIST_HEAD(abort_list);
9427         u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0;
9428
9429
9430         timeout = (uint32_t)(phba->fc_ratov << 1);
9431
9432         pring = lpfc_phba_elsring(phba);
9433         if (unlikely(!pring))
9434                 return;
9435
9436         if (test_bit(FC_UNLOADING, &phba->pport->load_flag))
9437                 return;
9438
9439         spin_lock_irq(&phba->hbalock);
9440         if (phba->sli_rev == LPFC_SLI_REV4)
9441                 spin_lock(&pring->ring_lock);
9442
9443         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
9444                 ulp_command = get_job_cmnd(phba, piocb);
9445                 ulp_context = get_job_ulpcontext(phba, piocb);
9446                 did = get_job_els_rsp64_did(phba, piocb);
9447
9448                 if (phba->sli_rev == LPFC_SLI_REV4) {
9449                         iotag = get_wqe_reqtag(piocb);
9450                 } else {
9451                         cmd = &piocb->iocb;
9452                         iotag = cmd->ulpIoTag;
9453                 }
9454
9455                 if ((piocb->cmd_flag & LPFC_IO_LIBDFC) != 0 ||
9456                     ulp_command == CMD_ABORT_XRI_CX ||
9457                     ulp_command == CMD_ABORT_XRI_CN ||
9458                     ulp_command == CMD_CLOSE_XRI_CN)
9459                         continue;
9460
9461                 if (piocb->vport != vport)
9462                         continue;
9463
9464                 pcmd = piocb->cmd_dmabuf;
9465                 if (pcmd)
9466                         els_command = *(uint32_t *) (pcmd->virt);
9467
9468                 if (els_command == ELS_CMD_FARP ||
9469                     els_command == ELS_CMD_FARPR ||
9470                     els_command == ELS_CMD_FDISC)
9471                         continue;
9472
9473                 if (piocb->drvrTimeout > 0) {
9474                         if (piocb->drvrTimeout >= timeout)
9475                                 piocb->drvrTimeout -= timeout;
9476                         else
9477                                 piocb->drvrTimeout = 0;
9478                         continue;
9479                 }
9480
9481                 remote_ID = 0xffffffff;
9482                 if (ulp_command != CMD_GEN_REQUEST64_CR) {
9483                         remote_ID = did;
9484                 } else {
9485                         struct lpfc_nodelist *ndlp;
9486                         ndlp = __lpfc_findnode_rpi(vport, ulp_context);
9487                         if (ndlp)
9488                                 remote_ID = ndlp->nlp_DID;
9489                 }
9490                 list_add_tail(&piocb->dlist, &abort_list);
9491         }
9492         if (phba->sli_rev == LPFC_SLI_REV4)
9493                 spin_unlock(&pring->ring_lock);
9494         spin_unlock_irq(&phba->hbalock);
9495
9496         list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
9497                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9498                          "0127 ELS timeout Data: x%x x%x x%x "
9499                          "x%x\n", els_command,
9500                          remote_ID, ulp_command, iotag);
9501
9502                 spin_lock_irq(&phba->hbalock);
9503                 list_del_init(&piocb->dlist);
9504                 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
9505                 spin_unlock_irq(&phba->hbalock);
9506         }
9507
9508         /* Make sure HBA is alive */
9509         lpfc_issue_hb_tmo(phba);
9510
9511         if (!list_empty(&pring->txcmplq))
9512                 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
9513                         mod_timer(&vport->els_tmofunc,
9514                                   jiffies + msecs_to_jiffies(1000 * timeout));
9515 }
9516
9517 /**
9518  * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
9519  * @vport: pointer to a host virtual N_Port data structure.
9520  *
9521  * This routine is used to clean up all the outstanding ELS commands on a
9522  * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
9523  * routine. After that, it walks the ELS transmit queue to remove all the
9524  * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
9525  * the IOCBs with a non-NULL completion callback function, the callback
9526  * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
9527  * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
9528  * callback function, the IOCB will simply be released. Finally, it walks
9529  * the ELS transmit completion queue to issue an abort IOCB to any transmit
9530  * completion queue IOCB that is associated with the @vport and is not
9531  * an IOCB from libdfc (i.e., the management plane IOCBs that are not
9532  * part of the discovery state machine) out to HBA by invoking the
9533  * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
9534  * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
9535  * the IOCBs are aborted when this function returns.
9536  **/
9537 void
9538 lpfc_els_flush_cmd(struct lpfc_vport *vport)
9539 {
9540         LIST_HEAD(abort_list);
9541         LIST_HEAD(cancel_list);
9542         struct lpfc_hba  *phba = vport->phba;
9543         struct lpfc_sli_ring *pring;
9544         struct lpfc_iocbq *tmp_iocb, *piocb;
9545         u32 ulp_command;
9546         unsigned long iflags = 0;
9547         bool mbx_tmo_err;
9548
9549         lpfc_fabric_abort_vport(vport);
9550
9551         /*
9552          * For SLI3, only the hbalock is required.  But SLI4 needs to coordinate
9553          * with the ring insert operation.  Because lpfc_sli_issue_abort_iotag
9554          * ultimately grabs the ring_lock, the driver must splice the list into
9555          * a working list and release the locks before calling the abort.
9556          */
9557         spin_lock_irqsave(&phba->hbalock, iflags);
9558         pring = lpfc_phba_elsring(phba);
9559
9560         /* Bail out if we've no ELS wq, like in PCI error recovery case. */
9561         if (unlikely(!pring)) {
9562                 spin_unlock_irqrestore(&phba->hbalock, iflags);
9563                 return;
9564         }
9565
9566         if (phba->sli_rev == LPFC_SLI_REV4)
9567                 spin_lock(&pring->ring_lock);
9568
9569         mbx_tmo_err = test_bit(MBX_TMO_ERR, &phba->bit_flags);
9570         /* First we need to issue aborts to outstanding cmds on txcmpl */
9571         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
9572                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9573                                  "2243 iotag = 0x%x cmd_flag = 0x%x "
9574                                  "ulp_command = 0x%x this_vport %x "
9575                                  "sli_flag = 0x%x\n",
9576                                  piocb->iotag, piocb->cmd_flag,
9577                                  get_job_cmnd(phba, piocb),
9578                                  (piocb->vport == vport),
9579                                  phba->sli.sli_flag);
9580
9581                 if (piocb->vport != vport)
9582                         continue;
9583
9584                 if ((phba->sli.sli_flag & LPFC_SLI_ACTIVE) && !mbx_tmo_err) {
9585                         if (piocb->cmd_flag & LPFC_IO_LIBDFC)
9586                                 continue;
9587                         if (piocb->cmd_flag & LPFC_DRIVER_ABORTED)
9588                                 continue;
9589                 }
9590
9591                 /* On the ELS ring we can have ELS_REQUESTs, ELS_RSPs,
9592                  * or GEN_REQUESTs waiting for a CQE response.
9593                  */
9594                 ulp_command = get_job_cmnd(phba, piocb);
9595                 if (ulp_command == CMD_ELS_REQUEST64_WQE ||
9596                     ulp_command == CMD_XMIT_ELS_RSP64_WQE) {
9597                         list_add_tail(&piocb->dlist, &abort_list);
9598
9599                         /* If the link is down when flushing ELS commands
9600                          * the firmware will not complete them till after
9601                          * the link comes back up. This may confuse
9602                          * discovery for the new link up, so we need to
9603                          * change the compl routine to just clean up the iocb
9604                          * and avoid any retry logic.
9605                          */
9606                         if (phba->link_state == LPFC_LINK_DOWN)
9607                                 piocb->cmd_cmpl = lpfc_cmpl_els_link_down;
9608                 } else if (ulp_command == CMD_GEN_REQUEST64_CR ||
9609                            mbx_tmo_err)
9610                         list_add_tail(&piocb->dlist, &abort_list);
9611         }
9612
9613         if (phba->sli_rev == LPFC_SLI_REV4)
9614                 spin_unlock(&pring->ring_lock);
9615         spin_unlock_irqrestore(&phba->hbalock, iflags);
9616
9617         /* Abort each txcmpl iocb on aborted list and remove the dlist links. */
9618         list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
9619                 spin_lock_irqsave(&phba->hbalock, iflags);
9620                 list_del_init(&piocb->dlist);
9621                 if (mbx_tmo_err || !(phba->sli.sli_flag & LPFC_SLI_ACTIVE))
9622                         list_move_tail(&piocb->list, &cancel_list);
9623                 else
9624                         lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
9625
9626                 spin_unlock_irqrestore(&phba->hbalock, iflags);
9627         }
9628         if (!list_empty(&cancel_list))
9629                 lpfc_sli_cancel_iocbs(phba, &cancel_list, IOSTAT_LOCAL_REJECT,
9630                                       IOERR_SLI_ABORTED);
9631         else
9632                 /* Make sure HBA is alive */
9633                 lpfc_issue_hb_tmo(phba);
9634
9635         if (!list_empty(&abort_list))
9636                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9637                                  "3387 abort list for txq not empty\n");
9638         INIT_LIST_HEAD(&abort_list);
9639
9640         spin_lock_irqsave(&phba->hbalock, iflags);
9641         if (phba->sli_rev == LPFC_SLI_REV4)
9642                 spin_lock(&pring->ring_lock);
9643
9644         /* No need to abort the txq list,
9645          * just queue them up for lpfc_sli_cancel_iocbs
9646          */
9647         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
9648                 ulp_command = get_job_cmnd(phba, piocb);
9649
9650                 if (piocb->cmd_flag & LPFC_IO_LIBDFC)
9651                         continue;
9652
9653                 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
9654                 if (ulp_command == CMD_QUE_RING_BUF_CN ||
9655                     ulp_command == CMD_QUE_RING_BUF64_CN ||
9656                     ulp_command == CMD_CLOSE_XRI_CN ||
9657                     ulp_command == CMD_ABORT_XRI_CN ||
9658                     ulp_command == CMD_ABORT_XRI_CX)
9659                         continue;
9660
9661                 if (piocb->vport != vport)
9662                         continue;
9663
9664                 list_del_init(&piocb->list);
9665                 list_add_tail(&piocb->list, &abort_list);
9666         }
9667
9668         /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */
9669         if (vport == phba->pport) {
9670                 list_for_each_entry_safe(piocb, tmp_iocb,
9671                                          &phba->fabric_iocb_list, list) {
9672                         list_del_init(&piocb->list);
9673                         list_add_tail(&piocb->list, &abort_list);
9674                 }
9675         }
9676
9677         if (phba->sli_rev == LPFC_SLI_REV4)
9678                 spin_unlock(&pring->ring_lock);
9679         spin_unlock_irqrestore(&phba->hbalock, iflags);
9680
9681         /* Cancel all the IOCBs from the completions list */
9682         lpfc_sli_cancel_iocbs(phba, &abort_list,
9683                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
9684
9685         return;
9686 }
9687
9688 /**
9689  * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
9690  * @phba: pointer to lpfc hba data structure.
9691  *
9692  * This routine is used to clean up all the outstanding ELS commands on a
9693  * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
9694  * routine. After that, it walks the ELS transmit queue to remove all the
9695  * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
9696  * the IOCBs with the completion callback function associated, the callback
9697  * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
9698  * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
9699  * callback function associated, the IOCB will simply be released. Finally,
9700  * it walks the ELS transmit completion queue to issue an abort IOCB to any
9701  * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
9702  * management plane IOCBs that are not part of the discovery state machine)
9703  * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
9704  **/
9705 void
9706 lpfc_els_flush_all_cmd(struct lpfc_hba  *phba)
9707 {
9708         struct lpfc_vport *vport;
9709
9710         spin_lock_irq(&phba->port_list_lock);
9711         list_for_each_entry(vport, &phba->port_list, listentry)
9712                 lpfc_els_flush_cmd(vport);
9713         spin_unlock_irq(&phba->port_list_lock);
9714
9715         return;
9716 }
9717
9718 /**
9719  * lpfc_send_els_failure_event - Posts an ELS command failure event
9720  * @phba: Pointer to hba context object.
9721  * @cmdiocbp: Pointer to command iocb which reported error.
9722  * @rspiocbp: Pointer to response iocb which reported error.
9723  *
9724  * This function sends an event when there is an ELS command
9725  * failure.
9726  **/
9727 void
9728 lpfc_send_els_failure_event(struct lpfc_hba *phba,
9729                         struct lpfc_iocbq *cmdiocbp,
9730                         struct lpfc_iocbq *rspiocbp)
9731 {
9732         struct lpfc_vport *vport = cmdiocbp->vport;
9733         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9734         struct lpfc_lsrjt_event lsrjt_event;
9735         struct lpfc_fabric_event_header fabric_event;
9736         struct ls_rjt stat;
9737         struct lpfc_nodelist *ndlp;
9738         uint32_t *pcmd;
9739         u32 ulp_status, ulp_word4;
9740
9741         ndlp = cmdiocbp->ndlp;
9742         if (!ndlp)
9743                 return;
9744
9745         ulp_status = get_job_ulpstatus(phba, rspiocbp);
9746         ulp_word4 = get_job_word4(phba, rspiocbp);
9747
9748         if (ulp_status == IOSTAT_LS_RJT) {
9749                 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
9750                 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
9751                 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
9752                         sizeof(struct lpfc_name));
9753                 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
9754                         sizeof(struct lpfc_name));
9755                 pcmd = (uint32_t *)cmdiocbp->cmd_dmabuf->virt;
9756                 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
9757                 stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
9758                 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
9759                 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
9760                 fc_host_post_vendor_event(shost,
9761                         fc_get_event_number(),
9762                         sizeof(lsrjt_event),
9763                         (char *)&lsrjt_event,
9764                         LPFC_NL_VENDOR_ID);
9765                 return;
9766         }
9767         if (ulp_status == IOSTAT_NPORT_BSY ||
9768             ulp_status == IOSTAT_FABRIC_BSY) {
9769                 fabric_event.event_type = FC_REG_FABRIC_EVENT;
9770                 if (ulp_status == IOSTAT_NPORT_BSY)
9771                         fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
9772                 else
9773                         fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
9774                 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
9775                         sizeof(struct lpfc_name));
9776                 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
9777                         sizeof(struct lpfc_name));
9778                 fc_host_post_vendor_event(shost,
9779                         fc_get_event_number(),
9780                         sizeof(fabric_event),
9781                         (char *)&fabric_event,
9782                         LPFC_NL_VENDOR_ID);
9783                 return;
9784         }
9785
9786 }
9787
9788 /**
9789  * lpfc_send_els_event - Posts unsolicited els event
9790  * @vport: Pointer to vport object.
9791  * @ndlp: Pointer FC node object.
9792  * @payload: ELS command code type.
9793  *
9794  * This function posts an event when there is an incoming
9795  * unsolicited ELS command.
9796  **/
9797 static void
9798 lpfc_send_els_event(struct lpfc_vport *vport,
9799                     struct lpfc_nodelist *ndlp,
9800                     uint32_t *payload)
9801 {
9802         struct lpfc_els_event_header *els_data = NULL;
9803         struct lpfc_logo_event *logo_data = NULL;
9804         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9805
9806         if (*payload == ELS_CMD_LOGO) {
9807                 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
9808                 if (!logo_data) {
9809                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9810                                 "0148 Failed to allocate memory "
9811                                 "for LOGO event\n");
9812                         return;
9813                 }
9814                 els_data = &logo_data->header;
9815         } else {
9816                 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
9817                         GFP_KERNEL);
9818                 if (!els_data) {
9819                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9820                                 "0149 Failed to allocate memory "
9821                                 "for ELS event\n");
9822                         return;
9823                 }
9824         }
9825         els_data->event_type = FC_REG_ELS_EVENT;
9826         switch (*payload) {
9827         case ELS_CMD_PLOGI:
9828                 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
9829                 break;
9830         case ELS_CMD_PRLO:
9831                 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
9832                 break;
9833         case ELS_CMD_ADISC:
9834                 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
9835                 break;
9836         case ELS_CMD_LOGO:
9837                 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
9838                 /* Copy the WWPN in the LOGO payload */
9839                 memcpy(logo_data->logo_wwpn, &payload[2],
9840                         sizeof(struct lpfc_name));
9841                 break;
9842         default:
9843                 kfree(els_data);
9844                 return;
9845         }
9846         memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
9847         memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
9848         if (*payload == ELS_CMD_LOGO) {
9849                 fc_host_post_vendor_event(shost,
9850                         fc_get_event_number(),
9851                         sizeof(struct lpfc_logo_event),
9852                         (char *)logo_data,
9853                         LPFC_NL_VENDOR_ID);
9854                 kfree(logo_data);
9855         } else {
9856                 fc_host_post_vendor_event(shost,
9857                         fc_get_event_number(),
9858                         sizeof(struct lpfc_els_event_header),
9859                         (char *)els_data,
9860                         LPFC_NL_VENDOR_ID);
9861                 kfree(els_data);
9862         }
9863
9864         return;
9865 }
9866
9867
9868 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types,
9869                         FC_FPIN_LI_EVT_TYPES_INIT);
9870
9871 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types,
9872                         FC_FPIN_DELI_EVT_TYPES_INIT);
9873
9874 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types,
9875                         FC_FPIN_CONGN_EVT_TYPES_INIT);
9876
9877 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm,
9878                         fc_fpin_congn_severity_types,
9879                         FC_FPIN_CONGN_SEVERITY_INIT);
9880
9881
9882 /**
9883  * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port
9884  * @phba: Pointer to phba object.
9885  * @wwnlist: Pointer to list of WWPNs in FPIN payload
9886  * @cnt: count of WWPNs in FPIN payload
9887  *
9888  * This routine is called by LI and PC descriptors.
9889  * Limit the number of WWPNs displayed to 6 log messages, 6 per log message
9890  */
9891 static void
9892 lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt)
9893 {
9894         char buf[LPFC_FPIN_WWPN_LINE_SZ];
9895         __be64 wwn;
9896         u64 wwpn;
9897         int i, len;
9898         int line = 0;
9899         int wcnt = 0;
9900         bool endit = false;
9901
9902         len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:");
9903         for (i = 0; i < cnt; i++) {
9904                 /* Are we on the last WWPN */
9905                 if (i == (cnt - 1))
9906                         endit = true;
9907
9908                 /* Extract the next WWPN from the payload */
9909                 wwn = *wwnlist++;
9910                 wwpn = be64_to_cpu(wwn);
9911                 len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len,
9912                                  " %016llx", wwpn);
9913
9914                 /* Log a message if we are on the last WWPN
9915                  * or if we hit the max allowed per message.
9916                  */
9917                 wcnt++;
9918                 if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) {
9919                         buf[len] = 0;
9920                         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9921                                         "4686 %s\n", buf);
9922
9923                         /* Check if we reached the last WWPN */
9924                         if (endit)
9925                                 return;
9926
9927                         /* Limit the number of log message displayed per FPIN */
9928                         line++;
9929                         if (line == LPFC_FPIN_WWPN_NUM_LINE) {
9930                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9931                                                 "4687 %d WWPNs Truncated\n",
9932                                                 cnt - i - 1);
9933                                 return;
9934                         }
9935
9936                         /* Start over with next log message */
9937                         wcnt = 0;
9938                         len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ,
9939                                         "Additional WWPNs:");
9940                 }
9941         }
9942 }
9943
9944 /**
9945  * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event.
9946  * @phba: Pointer to phba object.
9947  * @tlv:  Pointer to the Link Integrity Notification Descriptor.
9948  *
9949  * This function processes a Link Integrity FPIN event by logging a message.
9950  **/
9951 static void
9952 lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
9953 {
9954         struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv;
9955         const char *li_evt_str;
9956         u32 li_evt, cnt;
9957
9958         li_evt = be16_to_cpu(li->event_type);
9959         li_evt_str = lpfc_get_fpin_li_event_nm(li_evt);
9960         cnt = be32_to_cpu(li->pname_count);
9961
9962         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9963                         "4680 FPIN Link Integrity %s (x%x) "
9964                         "Detecting PN x%016llx Attached PN x%016llx "
9965                         "Duration %d mSecs Count %d Port Cnt %d\n",
9966                         li_evt_str, li_evt,
9967                         be64_to_cpu(li->detecting_wwpn),
9968                         be64_to_cpu(li->attached_wwpn),
9969                         be32_to_cpu(li->event_threshold),
9970                         be32_to_cpu(li->event_count), cnt);
9971
9972         lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt);
9973 }
9974
9975 /**
9976  * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event.
9977  * @phba: Pointer to hba object.
9978  * @tlv:  Pointer to the Delivery Notification Descriptor TLV
9979  *
9980  * This function processes a Delivery FPIN event by logging a message.
9981  **/
9982 static void
9983 lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
9984 {
9985         struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv;
9986         const char *del_rsn_str;
9987         u32 del_rsn;
9988         __be32 *frame;
9989
9990         del_rsn = be16_to_cpu(del->deli_reason_code);
9991         del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn);
9992
9993         /* Skip over desc_tag/desc_len header to payload */
9994         frame = (__be32 *)(del + 1);
9995
9996         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9997                         "4681 FPIN Delivery %s (x%x) "
9998                         "Detecting PN x%016llx Attached PN x%016llx "
9999                         "DiscHdr0  x%08x "
10000                         "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x "
10001                         "DiscHdr4 x%08x DiscHdr5 x%08x\n",
10002                         del_rsn_str, del_rsn,
10003                         be64_to_cpu(del->detecting_wwpn),
10004                         be64_to_cpu(del->attached_wwpn),
10005                         be32_to_cpu(frame[0]),
10006                         be32_to_cpu(frame[1]),
10007                         be32_to_cpu(frame[2]),
10008                         be32_to_cpu(frame[3]),
10009                         be32_to_cpu(frame[4]),
10010                         be32_to_cpu(frame[5]));
10011 }
10012
10013 /**
10014  * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event.
10015  * @phba: Pointer to hba object.
10016  * @tlv:  Pointer to the Peer Congestion Notification Descriptor TLV
10017  *
10018  * This function processes a Peer Congestion FPIN event by logging a message.
10019  **/
10020 static void
10021 lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
10022 {
10023         struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv;
10024         const char *pc_evt_str;
10025         u32 pc_evt, cnt;
10026
10027         pc_evt = be16_to_cpu(pc->event_type);
10028         pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt);
10029         cnt = be32_to_cpu(pc->pname_count);
10030
10031         /* Capture FPIN frequency */
10032         phba->cgn_fpin_frequency = be32_to_cpu(pc->event_period);
10033
10034         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS,
10035                         "4684 FPIN Peer Congestion %s (x%x) "
10036                         "Duration %d mSecs "
10037                         "Detecting PN x%016llx Attached PN x%016llx "
10038                         "Impacted Port Cnt %d\n",
10039                         pc_evt_str, pc_evt,
10040                         be32_to_cpu(pc->event_period),
10041                         be64_to_cpu(pc->detecting_wwpn),
10042                         be64_to_cpu(pc->attached_wwpn),
10043                         cnt);
10044
10045         lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt);
10046 }
10047
10048 /**
10049  * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification
10050  * @phba: Pointer to hba object.
10051  * @tlv:  Pointer to the Congestion Notification Descriptor TLV
10052  *
10053  * This function processes an FPIN Congestion Notifiction.  The notification
10054  * could be an Alarm or Warning.  This routine feeds that data into driver's
10055  * running congestion algorithm. It also processes the FPIN by
10056  * logging a message. It returns 1 to indicate deliver this message
10057  * to the upper layer or 0 to indicate don't deliver it.
10058  **/
10059 static int
10060 lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
10061 {
10062         struct lpfc_cgn_info *cp;
10063         struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv;
10064         const char *cgn_evt_str;
10065         u32 cgn_evt;
10066         const char *cgn_sev_str;
10067         u32 cgn_sev;
10068         uint16_t value;
10069         u32 crc;
10070         bool nm_log = false;
10071         int rc = 1;
10072
10073         cgn_evt = be16_to_cpu(cgn->event_type);
10074         cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt);
10075         cgn_sev = cgn->severity;
10076         cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev);
10077
10078         /* The driver only takes action on a Credit Stall or Oversubscription
10079          * event type to engage the IO algorithm.  The driver prints an
10080          * unmaskable message only for Lost Credit and Credit Stall.
10081          * TODO: Still need to have definition of host action on clear,
10082          *       lost credit and device specific event types.
10083          */
10084         switch (cgn_evt) {
10085         case FPIN_CONGN_LOST_CREDIT:
10086                 nm_log = true;
10087                 break;
10088         case FPIN_CONGN_CREDIT_STALL:
10089                 nm_log = true;
10090                 fallthrough;
10091         case FPIN_CONGN_OVERSUBSCRIPTION:
10092                 if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION)
10093                         nm_log = false;
10094                 switch (cgn_sev) {
10095                 case FPIN_CONGN_SEVERITY_ERROR:
10096                         /* Take action here for an Alarm event */
10097                         if (phba->cmf_active_mode != LPFC_CFG_OFF) {
10098                                 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) {
10099                                         /* Track of alarm cnt for SYNC_WQE */
10100                                         atomic_inc(&phba->cgn_sync_alarm_cnt);
10101                                 }
10102                                 /* Track alarm cnt for cgn_info regardless
10103                                  * of whether CMF is configured for Signals
10104                                  * or FPINs.
10105                                  */
10106                                 atomic_inc(&phba->cgn_fabric_alarm_cnt);
10107                                 goto cleanup;
10108                         }
10109                         break;
10110                 case FPIN_CONGN_SEVERITY_WARNING:
10111                         /* Take action here for a Warning event */
10112                         if (phba->cmf_active_mode != LPFC_CFG_OFF) {
10113                                 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) {
10114                                         /* Track of warning cnt for SYNC_WQE */
10115                                         atomic_inc(&phba->cgn_sync_warn_cnt);
10116                                 }
10117                                 /* Track warning cnt and freq for cgn_info
10118                                  * regardless of whether CMF is configured for
10119                                  * Signals or FPINs.
10120                                  */
10121                                 atomic_inc(&phba->cgn_fabric_warn_cnt);
10122 cleanup:
10123                                 /* Save frequency in ms */
10124                                 phba->cgn_fpin_frequency =
10125                                         be32_to_cpu(cgn->event_period);
10126                                 value = phba->cgn_fpin_frequency;
10127                                 if (phba->cgn_i) {
10128                                         cp = (struct lpfc_cgn_info *)
10129                                                 phba->cgn_i->virt;
10130                                         cp->cgn_alarm_freq =
10131                                                 cpu_to_le16(value);
10132                                         cp->cgn_warn_freq =
10133                                                 cpu_to_le16(value);
10134                                         crc = lpfc_cgn_calc_crc32
10135                                                 (cp,
10136                                                 LPFC_CGN_INFO_SZ,
10137                                                 LPFC_CGN_CRC32_SEED);
10138                                         cp->cgn_info_crc = cpu_to_le32(crc);
10139                                 }
10140
10141                                 /* Don't deliver to upper layer since
10142                                  * driver took action on this tlv.
10143                                  */
10144                                 rc = 0;
10145                         }
10146                         break;
10147                 }
10148                 break;
10149         }
10150
10151         /* Change the log level to unmaskable for the following event types. */
10152         lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO),
10153                         LOG_CGN_MGMT | LOG_ELS,
10154                         "4683 FPIN CONGESTION %s type %s (x%x) Event "
10155                         "Duration %d mSecs\n",
10156                         cgn_sev_str, cgn_evt_str, cgn_evt,
10157                         be32_to_cpu(cgn->event_period));
10158         return rc;
10159 }
10160
10161 void
10162 lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length)
10163 {
10164         struct lpfc_hba *phba = vport->phba;
10165         struct fc_els_fpin *fpin = (struct fc_els_fpin *)p;
10166         struct fc_tlv_desc *tlv, *first_tlv, *current_tlv;
10167         const char *dtag_nm;
10168         int desc_cnt = 0, bytes_remain, cnt;
10169         u32 dtag, deliver = 0;
10170         int len;
10171
10172         /* FPINs handled only if we are in the right discovery state */
10173         if (vport->port_state < LPFC_DISC_AUTH)
10174                 return;
10175
10176         /* make sure there is the full fpin header */
10177         if (fpin_length < sizeof(struct fc_els_fpin))
10178                 return;
10179
10180         /* Sanity check descriptor length. The desc_len value does not
10181          * include space for the ELS command and the desc_len fields.
10182          */
10183         len = be32_to_cpu(fpin->desc_len);
10184         if (fpin_length < len + sizeof(struct fc_els_fpin)) {
10185                 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10186                                 "4671 Bad ELS FPIN length %d: %d\n",
10187                                 len, fpin_length);
10188                 return;
10189         }
10190
10191         tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0];
10192         first_tlv = tlv;
10193         bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc);
10194         bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len));
10195
10196         /* process each descriptor separately */
10197         while (bytes_remain >= FC_TLV_DESC_HDR_SZ &&
10198                bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) {
10199                 dtag = be32_to_cpu(tlv->desc_tag);
10200                 switch (dtag) {
10201                 case ELS_DTAG_LNK_INTEGRITY:
10202                         lpfc_els_rcv_fpin_li(phba, tlv);
10203                         deliver = 1;
10204                         break;
10205                 case ELS_DTAG_DELIVERY:
10206                         lpfc_els_rcv_fpin_del(phba, tlv);
10207                         deliver = 1;
10208                         break;
10209                 case ELS_DTAG_PEER_CONGEST:
10210                         lpfc_els_rcv_fpin_peer_cgn(phba, tlv);
10211                         deliver = 1;
10212                         break;
10213                 case ELS_DTAG_CONGESTION:
10214                         deliver = lpfc_els_rcv_fpin_cgn(phba, tlv);
10215                         break;
10216                 default:
10217                         dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
10218                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10219                                         "4678 unknown FPIN descriptor[%d]: "
10220                                         "tag x%x (%s)\n",
10221                                         desc_cnt, dtag, dtag_nm);
10222
10223                         /* If descriptor is bad, drop the rest of the data */
10224                         return;
10225                 }
10226                 lpfc_cgn_update_stat(phba, dtag);
10227                 cnt = be32_to_cpu(tlv->desc_len);
10228
10229                 /* Sanity check descriptor length. The desc_len value does not
10230                  * include space for the desc_tag and the desc_len fields.
10231                  */
10232                 len -= (cnt + sizeof(struct fc_tlv_desc));
10233                 if (len < 0) {
10234                         dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
10235                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10236                                         "4672 Bad FPIN descriptor TLV length "
10237                                         "%d: %d %d %s\n",
10238                                         cnt, len, fpin_length, dtag_nm);
10239                         return;
10240                 }
10241
10242                 current_tlv = tlv;
10243                 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
10244                 tlv = fc_tlv_next_desc(tlv);
10245
10246                 /* Format payload such that the FPIN delivered to the
10247                  * upper layer is a single descriptor FPIN.
10248                  */
10249                 if (desc_cnt)
10250                         memcpy(first_tlv, current_tlv,
10251                                (cnt + sizeof(struct fc_els_fpin)));
10252
10253                 /* Adjust the length so that it only reflects a
10254                  * single descriptor FPIN.
10255                  */
10256                 fpin_length = cnt + sizeof(struct fc_els_fpin);
10257                 fpin->desc_len = cpu_to_be32(fpin_length);
10258                 fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */
10259
10260                 /* Send every descriptor individually to the upper layer */
10261                 if (deliver)
10262                         fc_host_fpin_rcv(lpfc_shost_from_vport(vport),
10263                                          fpin_length, (char *)fpin, 0);
10264                 desc_cnt++;
10265         }
10266 }
10267
10268 /**
10269  * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
10270  * @phba: pointer to lpfc hba data structure.
10271  * @pring: pointer to a SLI ring.
10272  * @vport: pointer to a host virtual N_Port data structure.
10273  * @elsiocb: pointer to lpfc els command iocb data structure.
10274  *
10275  * This routine is used for processing the IOCB associated with a unsolicited
10276  * event. It first determines whether there is an existing ndlp that matches
10277  * the DID from the unsolicited IOCB. If not, it will create a new one with
10278  * the DID from the unsolicited IOCB. The ELS command from the unsolicited
10279  * IOCB is then used to invoke the proper routine and to set up proper state
10280  * of the discovery state machine.
10281  **/
10282 static void
10283 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10284                       struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
10285 {
10286         struct lpfc_nodelist *ndlp;
10287         struct ls_rjt stat;
10288         u32 *payload, payload_len;
10289         u32 cmd = 0, did = 0, newnode, status = 0;
10290         uint8_t rjt_exp, rjt_err = 0, init_link = 0;
10291         struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
10292         LPFC_MBOXQ_t *mbox;
10293
10294         if (!vport || !elsiocb->cmd_dmabuf)
10295                 goto dropit;
10296
10297         newnode = 0;
10298         wcqe_cmpl = &elsiocb->wcqe_cmpl;
10299         payload = elsiocb->cmd_dmabuf->virt;
10300         if (phba->sli_rev == LPFC_SLI_REV4)
10301                 payload_len = wcqe_cmpl->total_data_placed;
10302         else
10303                 payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len;
10304         status = get_job_ulpstatus(phba, elsiocb);
10305         cmd = *payload;
10306         if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
10307                 lpfc_sli3_post_buffer(phba, pring, 1);
10308
10309         did = get_job_els_rsp64_did(phba, elsiocb);
10310         if (status) {
10311                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10312                         "RCV Unsol ELS:  status:x%x/x%x did:x%x",
10313                         status, get_job_word4(phba, elsiocb), did);
10314                 goto dropit;
10315         }
10316
10317         /* Check to see if link went down during discovery */
10318         if (lpfc_els_chk_latt(vport))
10319                 goto dropit;
10320
10321         /* Ignore traffic received during vport shutdown. */
10322         if (test_bit(FC_UNLOADING, &vport->load_flag))
10323                 goto dropit;
10324
10325         /* If NPort discovery is delayed drop incoming ELS */
10326         if (test_bit(FC_DISC_DELAYED, &vport->fc_flag) &&
10327             cmd != ELS_CMD_PLOGI)
10328                 goto dropit;
10329
10330         ndlp = lpfc_findnode_did(vport, did);
10331         if (!ndlp) {
10332                 /* Cannot find existing Fabric ndlp, so allocate a new one */
10333                 ndlp = lpfc_nlp_init(vport, did);
10334                 if (!ndlp)
10335                         goto dropit;
10336                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
10337                 newnode = 1;
10338                 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
10339                         ndlp->nlp_type |= NLP_FABRIC;
10340         } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
10341                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
10342                 newnode = 1;
10343         }
10344
10345         phba->fc_stat.elsRcvFrame++;
10346
10347         /*
10348          * Do not process any unsolicited ELS commands
10349          * if the ndlp is in DEV_LOSS
10350          */
10351         if (test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag)) {
10352                 if (newnode)
10353                         lpfc_nlp_put(ndlp);
10354                 goto dropit;
10355         }
10356
10357         elsiocb->ndlp = lpfc_nlp_get(ndlp);
10358         if (!elsiocb->ndlp)
10359                 goto dropit;
10360         elsiocb->vport = vport;
10361
10362         if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
10363                 cmd &= ELS_CMD_MASK;
10364         }
10365         /* ELS command <elsCmd> received from NPORT <did> */
10366         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
10367                          "0112 ELS command x%x received from NPORT x%x "
10368                          "refcnt %d Data: x%x x%lx x%x x%x\n",
10369                          cmd, did, kref_read(&ndlp->kref), vport->port_state,
10370                          vport->fc_flag, vport->fc_myDID, vport->fc_prevDID);
10371
10372         /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */
10373         if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
10374             (cmd != ELS_CMD_FLOGI) &&
10375             !((cmd == ELS_CMD_PLOGI) && test_bit(FC_PT2PT, &vport->fc_flag))) {
10376                 rjt_err = LSRJT_LOGICAL_BSY;
10377                 rjt_exp = LSEXP_NOTHING_MORE;
10378                 goto lsrjt;
10379         }
10380
10381         switch (cmd) {
10382         case ELS_CMD_PLOGI:
10383                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10384                         "RCV PLOGI:       did:x%x/ste:x%x flg:x%lx",
10385                         did, vport->port_state, ndlp->nlp_flag);
10386
10387                 phba->fc_stat.elsRcvPLOGI++;
10388                 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
10389                 if (phba->sli_rev == LPFC_SLI_REV4 &&
10390                     test_bit(FC_PT2PT, &phba->pport->fc_flag)) {
10391                         vport->fc_prevDID = vport->fc_myDID;
10392                         /* Our DID needs to be updated before registering
10393                          * the vfi. This is done in lpfc_rcv_plogi but
10394                          * that is called after the reg_vfi.
10395                          */
10396                         vport->fc_myDID =
10397                                 bf_get(els_rsp64_sid,
10398                                        &elsiocb->wqe.xmit_els_rsp);
10399                         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
10400                                          "3312 Remote port assigned DID x%x "
10401                                          "%x\n", vport->fc_myDID,
10402                                          vport->fc_prevDID);
10403                 }
10404
10405                 lpfc_send_els_event(vport, ndlp, payload);
10406
10407                 /* If Nport discovery is delayed, reject PLOGIs */
10408                 if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
10409                         rjt_err = LSRJT_UNABLE_TPC;
10410                         rjt_exp = LSEXP_NOTHING_MORE;
10411                         break;
10412                 }
10413
10414                 if (vport->port_state < LPFC_DISC_AUTH) {
10415                         if (!test_bit(FC_PT2PT, &phba->pport->fc_flag) ||
10416                             test_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag)) {
10417                                 rjt_err = LSRJT_UNABLE_TPC;
10418                                 rjt_exp = LSEXP_NOTHING_MORE;
10419                                 break;
10420                         }
10421                 }
10422
10423                 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10424                                         NLP_EVT_RCV_PLOGI);
10425
10426                 break;
10427         case ELS_CMD_FLOGI:
10428                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10429                         "RCV FLOGI:       did:x%x/ste:x%x flg:x%lx",
10430                         did, vport->port_state, ndlp->nlp_flag);
10431
10432                 phba->fc_stat.elsRcvFLOGI++;
10433
10434                 /* If the driver believes fabric discovery is done and is ready,
10435                  * bounce the link.  There is some descrepancy.
10436                  */
10437                 if (vport->port_state >= LPFC_LOCAL_CFG_LINK &&
10438                     test_bit(FC_PT2PT, &vport->fc_flag) &&
10439                     vport->rcv_flogi_cnt >= 1) {
10440                         rjt_err = LSRJT_LOGICAL_BSY;
10441                         rjt_exp = LSEXP_NOTHING_MORE;
10442                         init_link++;
10443                         goto lsrjt;
10444                 }
10445
10446                 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
10447                 /* retain node if our response is deferred */
10448                 if (phba->defer_flogi_acc.flag)
10449                         break;
10450                 if (newnode)
10451                         lpfc_disc_state_machine(vport, ndlp, NULL,
10452                                         NLP_EVT_DEVICE_RM);
10453                 break;
10454         case ELS_CMD_LOGO:
10455                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10456                         "RCV LOGO:        did:x%x/ste:x%x flg:x%lx",
10457                         did, vport->port_state, ndlp->nlp_flag);
10458
10459                 phba->fc_stat.elsRcvLOGO++;
10460                 lpfc_send_els_event(vport, ndlp, payload);
10461                 if (vport->port_state < LPFC_DISC_AUTH) {
10462                         rjt_err = LSRJT_UNABLE_TPC;
10463                         rjt_exp = LSEXP_NOTHING_MORE;
10464                         break;
10465                 }
10466                 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
10467                 if (newnode)
10468                         lpfc_disc_state_machine(vport, ndlp, NULL,
10469                                         NLP_EVT_DEVICE_RM);
10470                 break;
10471         case ELS_CMD_PRLO:
10472                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10473                         "RCV PRLO:        did:x%x/ste:x%x flg:x%lx",
10474                         did, vport->port_state, ndlp->nlp_flag);
10475
10476                 phba->fc_stat.elsRcvPRLO++;
10477                 lpfc_send_els_event(vport, ndlp, payload);
10478                 if (vport->port_state < LPFC_DISC_AUTH) {
10479                         rjt_err = LSRJT_UNABLE_TPC;
10480                         rjt_exp = LSEXP_NOTHING_MORE;
10481                         break;
10482                 }
10483                 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
10484                 break;
10485         case ELS_CMD_LCB:
10486                 phba->fc_stat.elsRcvLCB++;
10487                 lpfc_els_rcv_lcb(vport, elsiocb, ndlp);
10488                 break;
10489         case ELS_CMD_RDP:
10490                 phba->fc_stat.elsRcvRDP++;
10491                 lpfc_els_rcv_rdp(vport, elsiocb, ndlp);
10492                 break;
10493         case ELS_CMD_RSCN:
10494                 phba->fc_stat.elsRcvRSCN++;
10495                 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
10496                 if (newnode)
10497                         lpfc_disc_state_machine(vport, ndlp, NULL,
10498                                         NLP_EVT_DEVICE_RM);
10499                 break;
10500         case ELS_CMD_ADISC:
10501                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10502                         "RCV ADISC:       did:x%x/ste:x%x flg:x%lx",
10503                         did, vport->port_state, ndlp->nlp_flag);
10504
10505                 lpfc_send_els_event(vport, ndlp, payload);
10506                 phba->fc_stat.elsRcvADISC++;
10507                 if (vport->port_state < LPFC_DISC_AUTH) {
10508                         rjt_err = LSRJT_UNABLE_TPC;
10509                         rjt_exp = LSEXP_NOTHING_MORE;
10510                         break;
10511                 }
10512                 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10513                                         NLP_EVT_RCV_ADISC);
10514                 break;
10515         case ELS_CMD_PDISC:
10516                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10517                         "RCV PDISC:       did:x%x/ste:x%x flg:x%lx",
10518                         did, vport->port_state, ndlp->nlp_flag);
10519
10520                 phba->fc_stat.elsRcvPDISC++;
10521                 if (vport->port_state < LPFC_DISC_AUTH) {
10522                         rjt_err = LSRJT_UNABLE_TPC;
10523                         rjt_exp = LSEXP_NOTHING_MORE;
10524                         break;
10525                 }
10526                 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10527                                         NLP_EVT_RCV_PDISC);
10528                 break;
10529         case ELS_CMD_FARPR:
10530                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10531                         "RCV FARPR:       did:x%x/ste:x%x flg:x%lx",
10532                         did, vport->port_state, ndlp->nlp_flag);
10533
10534                 phba->fc_stat.elsRcvFARPR++;
10535                 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
10536                 break;
10537         case ELS_CMD_FARP:
10538                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10539                         "RCV FARP:        did:x%x/ste:x%x flg:x%lx",
10540                         did, vport->port_state, ndlp->nlp_flag);
10541
10542                 phba->fc_stat.elsRcvFARP++;
10543                 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
10544                 break;
10545         case ELS_CMD_FAN:
10546                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10547                         "RCV FAN:         did:x%x/ste:x%x flg:x%lx",
10548                         did, vport->port_state, ndlp->nlp_flag);
10549
10550                 phba->fc_stat.elsRcvFAN++;
10551                 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
10552                 break;
10553         case ELS_CMD_PRLI:
10554         case ELS_CMD_NVMEPRLI:
10555                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10556                         "RCV PRLI:        did:x%x/ste:x%x flg:x%lx",
10557                         did, vport->port_state, ndlp->nlp_flag);
10558
10559                 phba->fc_stat.elsRcvPRLI++;
10560                 if ((vport->port_state < LPFC_DISC_AUTH) &&
10561                     test_bit(FC_FABRIC, &vport->fc_flag)) {
10562                         rjt_err = LSRJT_UNABLE_TPC;
10563                         rjt_exp = LSEXP_NOTHING_MORE;
10564                         break;
10565                 }
10566                 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
10567                 break;
10568         case ELS_CMD_LIRR:
10569                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10570                         "RCV LIRR:        did:x%x/ste:x%x flg:x%lx",
10571                         did, vport->port_state, ndlp->nlp_flag);
10572
10573                 phba->fc_stat.elsRcvLIRR++;
10574                 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
10575                 if (newnode)
10576                         lpfc_disc_state_machine(vport, ndlp, NULL,
10577                                         NLP_EVT_DEVICE_RM);
10578                 break;
10579         case ELS_CMD_RLS:
10580                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10581                         "RCV RLS:         did:x%x/ste:x%x flg:x%lx",
10582                         did, vport->port_state, ndlp->nlp_flag);
10583
10584                 phba->fc_stat.elsRcvRLS++;
10585                 lpfc_els_rcv_rls(vport, elsiocb, ndlp);
10586                 if (newnode)
10587                         lpfc_disc_state_machine(vport, ndlp, NULL,
10588                                         NLP_EVT_DEVICE_RM);
10589                 break;
10590         case ELS_CMD_RPL:
10591                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10592                         "RCV RPL:         did:x%x/ste:x%x flg:x%lx",
10593                         did, vport->port_state, ndlp->nlp_flag);
10594
10595                 phba->fc_stat.elsRcvRPL++;
10596                 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
10597                 if (newnode)
10598                         lpfc_disc_state_machine(vport, ndlp, NULL,
10599                                         NLP_EVT_DEVICE_RM);
10600                 break;
10601         case ELS_CMD_RNID:
10602                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10603                         "RCV RNID:        did:x%x/ste:x%x flg:x%lx",
10604                         did, vport->port_state, ndlp->nlp_flag);
10605
10606                 phba->fc_stat.elsRcvRNID++;
10607                 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
10608                 if (newnode)
10609                         lpfc_disc_state_machine(vport, ndlp, NULL,
10610                                         NLP_EVT_DEVICE_RM);
10611                 break;
10612         case ELS_CMD_RTV:
10613                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10614                         "RCV RTV:        did:x%x/ste:x%x flg:x%lx",
10615                         did, vport->port_state, ndlp->nlp_flag);
10616                 phba->fc_stat.elsRcvRTV++;
10617                 lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
10618                 if (newnode)
10619                         lpfc_disc_state_machine(vport, ndlp, NULL,
10620                                         NLP_EVT_DEVICE_RM);
10621                 break;
10622         case ELS_CMD_RRQ:
10623                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10624                         "RCV RRQ:         did:x%x/ste:x%x flg:x%lx",
10625                         did, vport->port_state, ndlp->nlp_flag);
10626
10627                 phba->fc_stat.elsRcvRRQ++;
10628                 lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
10629                 if (newnode)
10630                         lpfc_disc_state_machine(vport, ndlp, NULL,
10631                                         NLP_EVT_DEVICE_RM);
10632                 break;
10633         case ELS_CMD_ECHO:
10634                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10635                         "RCV ECHO:        did:x%x/ste:x%x flg:x%lx",
10636                         did, vport->port_state, ndlp->nlp_flag);
10637
10638                 phba->fc_stat.elsRcvECHO++;
10639                 lpfc_els_rcv_echo(vport, elsiocb, ndlp);
10640                 if (newnode)
10641                         lpfc_disc_state_machine(vport, ndlp, NULL,
10642                                         NLP_EVT_DEVICE_RM);
10643                 break;
10644         case ELS_CMD_REC:
10645                 /* receive this due to exchange closed */
10646                 rjt_err = LSRJT_UNABLE_TPC;
10647                 rjt_exp = LSEXP_INVALID_OX_RX;
10648                 break;
10649         case ELS_CMD_FPIN:
10650                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10651                                       "RCV FPIN:       did:x%x/ste:x%x "
10652                                       "flg:x%lx",
10653                                       did, vport->port_state, ndlp->nlp_flag);
10654
10655                 lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload,
10656                                   payload_len);
10657
10658                 /* There are no replies, so no rjt codes */
10659                 break;
10660         case ELS_CMD_EDC:
10661                 lpfc_els_rcv_edc(vport, elsiocb, ndlp);
10662                 break;
10663         case ELS_CMD_RDF:
10664                 phba->fc_stat.elsRcvRDF++;
10665                 /* Accept RDF only from fabric controller */
10666                 if (did != Fabric_Cntl_DID) {
10667                         lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
10668                                          "1115 Received RDF from invalid DID "
10669                                          "x%x\n", did);
10670                         rjt_err = LSRJT_PROTOCOL_ERR;
10671                         rjt_exp = LSEXP_NOTHING_MORE;
10672                         goto lsrjt;
10673                 }
10674
10675                 lpfc_els_rcv_rdf(vport, elsiocb, ndlp);
10676                 break;
10677         default:
10678                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10679                         "RCV ELS cmd:     cmd:x%x did:x%x/ste:x%x",
10680                         cmd, did, vport->port_state);
10681
10682                 /* Unsupported ELS command, reject */
10683                 rjt_err = LSRJT_CMD_UNSUPPORTED;
10684                 rjt_exp = LSEXP_NOTHING_MORE;
10685
10686                 /* Unknown ELS command <elsCmd> received from NPORT <did> */
10687                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
10688                                  "0115 Unknown ELS command x%x "
10689                                  "received from NPORT x%x\n", cmd, did);
10690                 if (newnode)
10691                         lpfc_disc_state_machine(vport, ndlp, NULL,
10692                                         NLP_EVT_DEVICE_RM);
10693                 break;
10694         }
10695
10696 lsrjt:
10697         /* check if need to LS_RJT received ELS cmd */
10698         if (rjt_err) {
10699                 memset(&stat, 0, sizeof(stat));
10700                 stat.un.b.lsRjtRsnCode = rjt_err;
10701                 stat.un.b.lsRjtRsnCodeExp = rjt_exp;
10702                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
10703                                     NULL);
10704                 /* Remove the reference from above for new nodes. */
10705                 if (newnode)
10706                         lpfc_disc_state_machine(vport, ndlp, NULL,
10707                                         NLP_EVT_DEVICE_RM);
10708         }
10709
10710         /* Release the reference on this elsiocb, not the ndlp. */
10711         lpfc_nlp_put(elsiocb->ndlp);
10712         elsiocb->ndlp = NULL;
10713
10714         /* Special case.  Driver received an unsolicited command that
10715          * unsupportable given the driver's current state.  Reset the
10716          * link and start over.
10717          */
10718         if (init_link) {
10719                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10720                 if (!mbox)
10721                         return;
10722                 lpfc_linkdown(phba);
10723                 lpfc_init_link(phba, mbox,
10724                                phba->cfg_topology,
10725                                phba->cfg_link_speed);
10726                 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
10727                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
10728                 mbox->vport = vport;
10729                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
10730                     MBX_NOT_FINISHED)
10731                         mempool_free(mbox, phba->mbox_mem_pool);
10732         }
10733
10734         return;
10735
10736 dropit:
10737         if (vport && !test_bit(FC_UNLOADING, &vport->load_flag))
10738                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10739                         "0111 Dropping received ELS cmd "
10740                         "Data: x%x x%x x%x x%x\n",
10741                         cmd, status, get_job_word4(phba, elsiocb), did);
10742
10743         phba->fc_stat.elsRcvDrop++;
10744 }
10745
10746 /**
10747  * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
10748  * @phba: pointer to lpfc hba data structure.
10749  * @pring: pointer to a SLI ring.
10750  * @elsiocb: pointer to lpfc els iocb data structure.
10751  *
10752  * This routine is used to process an unsolicited event received from a SLI
10753  * (Service Level Interface) ring. The actual processing of the data buffer
10754  * associated with the unsolicited event is done by invoking the routine
10755  * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
10756  * SLI ring on which the unsolicited event was received.
10757  **/
10758 void
10759 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10760                      struct lpfc_iocbq *elsiocb)
10761 {
10762         struct lpfc_vport *vport = elsiocb->vport;
10763         u32 ulp_command, status, parameter, bde_count = 0;
10764         IOCB_t *icmd;
10765         struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
10766         struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf;
10767         struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf;
10768         dma_addr_t paddr;
10769
10770         elsiocb->cmd_dmabuf = NULL;
10771         elsiocb->rsp_dmabuf = NULL;
10772         elsiocb->bpl_dmabuf = NULL;
10773
10774         wcqe_cmpl = &elsiocb->wcqe_cmpl;
10775         ulp_command = get_job_cmnd(phba, elsiocb);
10776         status = get_job_ulpstatus(phba, elsiocb);
10777         parameter = get_job_word4(phba, elsiocb);
10778         if (phba->sli_rev == LPFC_SLI_REV4)
10779                 bde_count = wcqe_cmpl->word3;
10780         else
10781                 bde_count = elsiocb->iocb.ulpBdeCount;
10782
10783         if (status == IOSTAT_NEED_BUFFER) {
10784                 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
10785         } else if (status == IOSTAT_LOCAL_REJECT &&
10786                    (parameter & IOERR_PARAM_MASK) ==
10787                    IOERR_RCV_BUFFER_WAITING) {
10788                 phba->fc_stat.NoRcvBuf++;
10789                 /* Not enough posted buffers; Try posting more buffers */
10790                 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
10791                         lpfc_sli3_post_buffer(phba, pring, 0);
10792                 return;
10793         }
10794
10795         if (phba->sli_rev == LPFC_SLI_REV3) {
10796                 icmd = &elsiocb->iocb;
10797                 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
10798                     (ulp_command == CMD_IOCB_RCV_ELS64_CX ||
10799                      ulp_command == CMD_IOCB_RCV_SEQ64_CX)) {
10800                         if (icmd->unsli3.rcvsli3.vpi == 0xffff)
10801                                 vport = phba->pport;
10802                         else
10803                                 vport = lpfc_find_vport_by_vpid(phba,
10804                                                 icmd->unsli3.rcvsli3.vpi);
10805                 }
10806         }
10807
10808         /* If there are no BDEs associated
10809          * with this IOCB, there is nothing to do.
10810          */
10811         if (bde_count == 0)
10812                 return;
10813
10814         /* Account for SLI2 or SLI3 and later unsolicited buffering */
10815         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
10816                 elsiocb->cmd_dmabuf = bdeBuf1;
10817                 if (bde_count == 2)
10818                         elsiocb->bpl_dmabuf = bdeBuf2;
10819         } else {
10820                 icmd = &elsiocb->iocb;
10821                 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
10822                                  icmd->un.cont64[0].addrLow);
10823                 elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
10824                                                                paddr);
10825                 if (bde_count == 2) {
10826                         paddr = getPaddr(icmd->un.cont64[1].addrHigh,
10827                                          icmd->un.cont64[1].addrLow);
10828                         elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
10829                                                                         pring,
10830                                                                         paddr);
10831                 }
10832         }
10833
10834         lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
10835         /*
10836          * The different unsolicited event handlers would tell us
10837          * if they are done with "mp" by setting cmd_dmabuf to NULL.
10838          */
10839         if (elsiocb->cmd_dmabuf) {
10840                 lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf);
10841                 elsiocb->cmd_dmabuf = NULL;
10842         }
10843
10844         if (elsiocb->bpl_dmabuf) {
10845                 lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf);
10846                 elsiocb->bpl_dmabuf = NULL;
10847         }
10848
10849 }
10850
10851 static void
10852 lpfc_start_fdmi(struct lpfc_vport *vport)
10853 {
10854         struct lpfc_nodelist *ndlp;
10855
10856         /* If this is the first time, allocate an ndlp and initialize
10857          * it. Otherwise, make sure the node is enabled and then do the
10858          * login.
10859          */
10860         ndlp = lpfc_findnode_did(vport, FDMI_DID);
10861         if (!ndlp) {
10862                 ndlp = lpfc_nlp_init(vport, FDMI_DID);
10863                 if (ndlp) {
10864                         ndlp->nlp_type |= NLP_FABRIC;
10865                 } else {
10866                         return;
10867                 }
10868         }
10869
10870         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
10871         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
10872 }
10873
10874 /**
10875  * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
10876  * @phba: pointer to lpfc hba data structure.
10877  * @vport: pointer to a virtual N_Port data structure.
10878  *
10879  * This routine issues a Port Login (PLOGI) to the Name Server with
10880  * State Change Request (SCR) for a @vport. This routine will create an
10881  * ndlp for the Name Server associated to the @vport if such node does
10882  * not already exist. The PLOGI to Name Server is issued by invoking the
10883  * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
10884  * (FDMI) is configured to the @vport, a FDMI node will be created and
10885  * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
10886  **/
10887 void
10888 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
10889 {
10890         struct lpfc_nodelist *ndlp;
10891
10892         /*
10893          * If lpfc_delay_discovery parameter is set and the clean address
10894          * bit is cleared and fc fabric parameters chenged, delay FC NPort
10895          * discovery.
10896          */
10897         if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
10898                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10899                                  "3334 Delay fc port discovery for %d secs\n",
10900                                  phba->fc_ratov);
10901                 mod_timer(&vport->delayed_disc_tmo,
10902                         jiffies + msecs_to_jiffies(1000 * phba->fc_ratov));
10903                 return;
10904         }
10905
10906         ndlp = lpfc_findnode_did(vport, NameServer_DID);
10907         if (!ndlp) {
10908                 ndlp = lpfc_nlp_init(vport, NameServer_DID);
10909                 if (!ndlp) {
10910                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
10911                                 lpfc_disc_start(vport);
10912                                 return;
10913                         }
10914                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10915                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10916                                          "0251 NameServer login: no memory\n");
10917                         return;
10918                 }
10919         }
10920
10921         ndlp->nlp_type |= NLP_FABRIC;
10922
10923         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
10924
10925         if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
10926                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10927                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10928                                  "0252 Cannot issue NameServer login\n");
10929                 return;
10930         }
10931
10932         if ((phba->cfg_enable_SmartSAN ||
10933              phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT) &&
10934             test_bit(FC_ALLOW_FDMI, &vport->load_flag))
10935                 lpfc_start_fdmi(vport);
10936 }
10937
10938 /**
10939  * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
10940  * @phba: pointer to lpfc hba data structure.
10941  * @pmb: pointer to the driver internal queue element for mailbox command.
10942  *
10943  * This routine is the completion callback function to register new vport
10944  * mailbox command. If the new vport mailbox command completes successfully,
10945  * the fabric registration login shall be performed on physical port (the
10946  * new vport created is actually a physical port, with VPI 0) or the port
10947  * login to Name Server for State Change Request (SCR) will be performed
10948  * on virtual port (real virtual port, with VPI greater than 0).
10949  **/
10950 static void
10951 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
10952 {
10953         struct lpfc_vport *vport = pmb->vport;
10954         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
10955         struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
10956         MAILBOX_t *mb = &pmb->u.mb;
10957         int rc;
10958
10959         clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
10960
10961         if (mb->mbxStatus) {
10962                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10963                                 "0915 Register VPI failed : Status: x%x"
10964                                 " upd bit: x%x \n", mb->mbxStatus,
10965                                  mb->un.varRegVpi.upd);
10966                 if (phba->sli_rev == LPFC_SLI_REV4 &&
10967                         mb->un.varRegVpi.upd)
10968                         goto mbox_err_exit ;
10969
10970                 switch (mb->mbxStatus) {
10971                 case 0x11:      /* unsupported feature */
10972                 case 0x9603:    /* max_vpi exceeded */
10973                 case 0x9602:    /* Link event since CLEAR_LA */
10974                         /* giving up on vport registration */
10975                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10976                         clear_bit(FC_FABRIC, &vport->fc_flag);
10977                         clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
10978                         lpfc_can_disctmo(vport);
10979                         break;
10980                 /* If reg_vpi fail with invalid VPI status, re-init VPI */
10981                 case 0x20:
10982                         set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
10983                         lpfc_init_vpi(phba, pmb, vport->vpi);
10984                         pmb->vport = vport;
10985                         pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
10986                         rc = lpfc_sli_issue_mbox(phba, pmb,
10987                                 MBX_NOWAIT);
10988                         if (rc == MBX_NOT_FINISHED) {
10989                                 lpfc_printf_vlog(vport, KERN_ERR,
10990                                                  LOG_TRACE_EVENT,
10991                                         "2732 Failed to issue INIT_VPI"
10992                                         " mailbox command\n");
10993                         } else {
10994                                 lpfc_nlp_put(ndlp);
10995                                 return;
10996                         }
10997                         fallthrough;
10998                 default:
10999                         /* Try to recover from this error */
11000                         if (phba->sli_rev == LPFC_SLI_REV4)
11001                                 lpfc_sli4_unreg_all_rpis(vport);
11002                         lpfc_mbx_unreg_vpi(vport);
11003                         set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11004                         if (mb->mbxStatus == MBX_NOT_FINISHED)
11005                                 break;
11006                         if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
11007                             !test_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) {
11008                                 if (phba->sli_rev == LPFC_SLI_REV4)
11009                                         lpfc_issue_init_vfi(vport);
11010                                 else
11011                                         lpfc_initial_flogi(vport);
11012                         } else {
11013                                 lpfc_initial_fdisc(vport);
11014                         }
11015                         break;
11016                 }
11017         } else {
11018                 spin_lock_irq(shost->host_lock);
11019                 vport->vpi_state |= LPFC_VPI_REGISTERED;
11020                 spin_unlock_irq(shost->host_lock);
11021                 if (vport == phba->pport) {
11022                         if (phba->sli_rev < LPFC_SLI_REV4)
11023                                 lpfc_issue_fabric_reglogin(vport);
11024                         else {
11025                                 /*
11026                                  * If the physical port is instantiated using
11027                                  * FDISC, do not start vport discovery.
11028                                  */
11029                                 if (vport->port_state != LPFC_FDISC)
11030                                         lpfc_start_fdiscs(phba);
11031                                 lpfc_do_scr_ns_plogi(phba, vport);
11032                         }
11033                 } else {
11034                         lpfc_do_scr_ns_plogi(phba, vport);
11035                 }
11036         }
11037 mbox_err_exit:
11038         /* Now, we decrement the ndlp reference count held for this
11039          * callback function
11040          */
11041         lpfc_nlp_put(ndlp);
11042
11043         mempool_free(pmb, phba->mbox_mem_pool);
11044
11045         /* reinitialize the VMID datastructure before returning.
11046          * this is specifically for vport
11047          */
11048         if (lpfc_is_vmid_enabled(phba))
11049                 lpfc_reinit_vmid(vport);
11050         vport->vmid_flag = vport->phba->pport->vmid_flag;
11051
11052         return;
11053 }
11054
11055 /**
11056  * lpfc_register_new_vport - Register a new vport with a HBA
11057  * @phba: pointer to lpfc hba data structure.
11058  * @vport: pointer to a host virtual N_Port data structure.
11059  * @ndlp: pointer to a node-list data structure.
11060  *
11061  * This routine registers the @vport as a new virtual port with a HBA.
11062  * It is done through a registering vpi mailbox command.
11063  **/
11064 void
11065 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
11066                         struct lpfc_nodelist *ndlp)
11067 {
11068         LPFC_MBOXQ_t *mbox;
11069
11070         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
11071         if (mbox) {
11072                 lpfc_reg_vpi(vport, mbox);
11073                 mbox->vport = vport;
11074                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
11075                 if (!mbox->ctx_ndlp) {
11076                         mempool_free(mbox, phba->mbox_mem_pool);
11077                         goto mbox_err_exit;
11078                 }
11079
11080                 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
11081                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
11082                     == MBX_NOT_FINISHED) {
11083                         /* mailbox command not success, decrement ndlp
11084                          * reference count for this command
11085                          */
11086                         lpfc_nlp_put(ndlp);
11087                         mempool_free(mbox, phba->mbox_mem_pool);
11088
11089                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11090                                 "0253 Register VPI: Can't send mbox\n");
11091                         goto mbox_err_exit;
11092                 }
11093         } else {
11094                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11095                                  "0254 Register VPI: no memory\n");
11096                 goto mbox_err_exit;
11097         }
11098         return;
11099
11100 mbox_err_exit:
11101         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11102         clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11103         return;
11104 }
11105
11106 /**
11107  * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
11108  * @phba: pointer to lpfc hba data structure.
11109  *
11110  * This routine cancels the retry delay timers to all the vports.
11111  **/
11112 void
11113 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
11114 {
11115         struct lpfc_vport **vports;
11116         struct lpfc_nodelist *ndlp;
11117         uint32_t link_state;
11118         int i;
11119
11120         /* Treat this failure as linkdown for all vports */
11121         link_state = phba->link_state;
11122         lpfc_linkdown(phba);
11123         phba->link_state = link_state;
11124
11125         vports = lpfc_create_vport_work_array(phba);
11126
11127         if (vports) {
11128                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
11129                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
11130                         if (ndlp)
11131                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
11132                         lpfc_els_flush_cmd(vports[i]);
11133                 }
11134                 lpfc_destroy_vport_work_array(phba, vports);
11135         }
11136 }
11137
11138 /**
11139  * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
11140  * @phba: pointer to lpfc hba data structure.
11141  *
11142  * This routine abort all pending discovery commands and
11143  * start a timer to retry FLOGI for the physical port
11144  * discovery.
11145  **/
11146 void
11147 lpfc_retry_pport_discovery(struct lpfc_hba *phba)
11148 {
11149         struct lpfc_nodelist *ndlp;
11150
11151         /* Cancel the all vports retry delay retry timers */
11152         lpfc_cancel_all_vport_retry_delay_timer(phba);
11153
11154         /* If fabric require FLOGI, then re-instantiate physical login */
11155         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
11156         if (!ndlp)
11157                 return;
11158
11159         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
11160         set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
11161         ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
11162         phba->pport->port_state = LPFC_FLOGI;
11163         return;
11164 }
11165
11166 /**
11167  * lpfc_fabric_login_reqd - Check if FLOGI required.
11168  * @phba: pointer to lpfc hba data structure.
11169  * @cmdiocb: pointer to FDISC command iocb.
11170  * @rspiocb: pointer to FDISC response iocb.
11171  *
11172  * This routine checks if a FLOGI is reguired for FDISC
11173  * to succeed.
11174  **/
11175 static int
11176 lpfc_fabric_login_reqd(struct lpfc_hba *phba,
11177                 struct lpfc_iocbq *cmdiocb,
11178                 struct lpfc_iocbq *rspiocb)
11179 {
11180         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
11181         u32 ulp_word4 = get_job_word4(phba, rspiocb);
11182
11183         if (ulp_status != IOSTAT_FABRIC_RJT ||
11184             ulp_word4 != RJT_LOGIN_REQUIRED)
11185                 return 0;
11186         else
11187                 return 1;
11188 }
11189
11190 /**
11191  * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
11192  * @phba: pointer to lpfc hba data structure.
11193  * @cmdiocb: pointer to lpfc command iocb data structure.
11194  * @rspiocb: pointer to lpfc response iocb data structure.
11195  *
11196  * This routine is the completion callback function to a Fabric Discover
11197  * (FDISC) ELS command. Since all the FDISC ELS commands are issued
11198  * single threaded, each FDISC completion callback function will reset
11199  * the discovery timer for all vports such that the timers will not get
11200  * unnecessary timeout. The function checks the FDISC IOCB status. If error
11201  * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
11202  * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
11203  * assigned to the vport has been changed with the completion of the FDISC
11204  * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
11205  * are unregistered from the HBA, and then the lpfc_register_new_vport()
11206  * routine is invoked to register new vport with the HBA. Otherwise, the
11207  * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
11208  * Server for State Change Request (SCR).
11209  **/
11210 static void
11211 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11212                     struct lpfc_iocbq *rspiocb)
11213 {
11214         struct lpfc_vport *vport = cmdiocb->vport;
11215         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
11216         struct lpfc_nodelist *np;
11217         struct lpfc_nodelist *next_np;
11218         struct lpfc_iocbq *piocb;
11219         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
11220         struct serv_parm *sp;
11221         uint8_t fabric_param_changed;
11222         u32 ulp_status, ulp_word4;
11223
11224         ulp_status = get_job_ulpstatus(phba, rspiocb);
11225         ulp_word4 = get_job_word4(phba, rspiocb);
11226
11227         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
11228                          "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
11229                          ulp_status, ulp_word4,
11230                          vport->fc_prevDID);
11231         /* Since all FDISCs are being single threaded, we
11232          * must reset the discovery timer for ALL vports
11233          * waiting to send FDISC when one completes.
11234          */
11235         list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
11236                 lpfc_set_disctmo(piocb->vport);
11237         }
11238
11239         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11240                 "FDISC cmpl:      status:x%x/x%x prevdid:x%x",
11241                 ulp_status, ulp_word4, vport->fc_prevDID);
11242
11243         if (ulp_status) {
11244
11245                 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
11246                         lpfc_retry_pport_discovery(phba);
11247                         goto out;
11248                 }
11249
11250                 /* Check for retry */
11251                 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
11252                         goto out;
11253                 /* Warn FDISC status */
11254                 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
11255                               "0126 FDISC cmpl status: x%x/x%x)\n",
11256                               ulp_status, ulp_word4);
11257                 goto fdisc_failed;
11258         }
11259
11260         lpfc_check_nlp_post_devloss(vport, ndlp);
11261
11262         clear_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag);
11263         clear_bit(FC_VPORT_LOGO_RCVD, &vport->fc_flag);
11264         set_bit(FC_FABRIC, &vport->fc_flag);
11265         if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP)
11266                 set_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
11267
11268         vport->fc_myDID = ulp_word4 & Mask_DID;
11269         lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
11270         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
11271         if (!prsp)
11272                 goto out;
11273         if (!lpfc_is_els_acc_rsp(prsp))
11274                 goto out;
11275
11276         sp = prsp->virt + sizeof(uint32_t);
11277         fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
11278         memcpy(&vport->fabric_portname, &sp->portName,
11279                 sizeof(struct lpfc_name));
11280         memcpy(&vport->fabric_nodename, &sp->nodeName,
11281                 sizeof(struct lpfc_name));
11282         if (fabric_param_changed &&
11283                 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
11284                 /* If our NportID changed, we need to ensure all
11285                  * remaining NPORTs get unreg_login'ed so we can
11286                  * issue unreg_vpi.
11287                  */
11288                 list_for_each_entry_safe(np, next_np,
11289                         &vport->fc_nodes, nlp_listp) {
11290                         if ((np->nlp_state != NLP_STE_NPR_NODE) ||
11291                             !test_bit(NLP_NPR_ADISC, &np->nlp_flag))
11292                                 continue;
11293                         clear_bit(NLP_NPR_ADISC, &np->nlp_flag);
11294                         lpfc_unreg_rpi(vport, np);
11295                 }
11296                 lpfc_cleanup_pending_mbox(vport);
11297
11298                 if (phba->sli_rev == LPFC_SLI_REV4)
11299                         lpfc_sli4_unreg_all_rpis(vport);
11300
11301                 lpfc_mbx_unreg_vpi(vport);
11302                 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11303                 if (phba->sli_rev == LPFC_SLI_REV4)
11304                         set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
11305                 else
11306                         set_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag);
11307         } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
11308                    !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
11309                 /*
11310                  * Driver needs to re-reg VPI in order for f/w
11311                  * to update the MAC address.
11312                  */
11313                 lpfc_register_new_vport(phba, vport, ndlp);
11314                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
11315                 goto out;
11316         }
11317
11318         if (test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag))
11319                 lpfc_issue_init_vpi(vport);
11320         else if (test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag))
11321                 lpfc_register_new_vport(phba, vport, ndlp);
11322         else
11323                 lpfc_do_scr_ns_plogi(phba, vport);
11324
11325         /* The FDISC completed successfully. Move the fabric ndlp to
11326          * UNMAPPED state and register with the transport.
11327          */
11328         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
11329         goto out;
11330
11331 fdisc_failed:
11332         if (vport->fc_vport &&
11333             (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS))
11334                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11335         /* Cancel discovery timer */
11336         lpfc_can_disctmo(vport);
11337 out:
11338         lpfc_els_free_iocb(phba, cmdiocb);
11339         lpfc_nlp_put(ndlp);
11340 }
11341
11342 /**
11343  * lpfc_issue_els_fdisc - Issue a fdisc iocb command
11344  * @vport: pointer to a virtual N_Port data structure.
11345  * @ndlp: pointer to a node-list data structure.
11346  * @retry: number of retries to the command IOCB.
11347  *
11348  * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
11349  * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
11350  * routine to issue the IOCB, which makes sure only one outstanding fabric
11351  * IOCB will be sent off HBA at any given time.
11352  *
11353  * Note that the ndlp reference count will be incremented by 1 for holding the
11354  * ndlp and the reference to ndlp will be stored into the ndlp field of
11355  * the IOCB for the completion callback function to the FDISC ELS command.
11356  *
11357  * Return code
11358  *   0 - Successfully issued fdisc iocb command
11359  *   1 - Failed to issue fdisc iocb command
11360  **/
11361 static int
11362 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
11363                      uint8_t retry)
11364 {
11365         struct lpfc_hba *phba = vport->phba;
11366         IOCB_t *icmd;
11367         union lpfc_wqe128 *wqe = NULL;
11368         struct lpfc_iocbq *elsiocb;
11369         struct serv_parm *sp;
11370         uint8_t *pcmd;
11371         uint16_t cmdsize;
11372         int did = ndlp->nlp_DID;
11373         int rc;
11374
11375         vport->port_state = LPFC_FDISC;
11376         vport->fc_myDID = 0;
11377         cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
11378         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
11379                                      ELS_CMD_FDISC);
11380         if (!elsiocb) {
11381                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11382                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11383                                  "0255 Issue FDISC: no IOCB\n");
11384                 return 1;
11385         }
11386
11387         if (phba->sli_rev == LPFC_SLI_REV4) {
11388                 wqe = &elsiocb->wqe;
11389                 bf_set(els_req64_sid, &wqe->els_req, 0);
11390                 bf_set(els_req64_sp, &wqe->els_req, 1);
11391         } else {
11392                 icmd = &elsiocb->iocb;
11393                 icmd->un.elsreq64.myID = 0;
11394                 icmd->un.elsreq64.fl = 1;
11395                 icmd->ulpCt_h = 1;
11396                 icmd->ulpCt_l = 0;
11397         }
11398
11399         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
11400         *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
11401         pcmd += sizeof(uint32_t); /* CSP Word 1 */
11402         memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
11403         sp = (struct serv_parm *) pcmd;
11404         /* Setup CSPs accordingly for Fabric */
11405         sp->cmn.e_d_tov = 0;
11406         sp->cmn.w2.r_a_tov = 0;
11407         sp->cmn.virtual_fabric_support = 0;
11408         sp->cls1.classValid = 0;
11409         sp->cls2.seqDelivery = 1;
11410         sp->cls3.seqDelivery = 1;
11411
11412         pcmd += sizeof(uint32_t); /* CSP Word 2 */
11413         pcmd += sizeof(uint32_t); /* CSP Word 3 */
11414         pcmd += sizeof(uint32_t); /* CSP Word 4 */
11415         pcmd += sizeof(uint32_t); /* Port Name */
11416         memcpy(pcmd, &vport->fc_portname, 8);
11417         pcmd += sizeof(uint32_t); /* Node Name */
11418         pcmd += sizeof(uint32_t); /* Node Name */
11419         memcpy(pcmd, &vport->fc_nodename, 8);
11420         sp->cmn.valid_vendor_ver_level = 0;
11421         memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
11422         lpfc_set_disctmo(vport);
11423
11424         phba->fc_stat.elsXmitFDISC++;
11425         elsiocb->cmd_cmpl = lpfc_cmpl_els_fdisc;
11426
11427         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11428                 "Issue FDISC:     did:x%x",
11429                 did, 0, 0);
11430
11431         elsiocb->ndlp = lpfc_nlp_get(ndlp);
11432         if (!elsiocb->ndlp)
11433                 goto err_out;
11434
11435         rc = lpfc_issue_fabric_iocb(phba, elsiocb);
11436         if (rc == IOCB_ERROR) {
11437                 lpfc_nlp_put(ndlp);
11438                 goto err_out;
11439         }
11440
11441         lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
11442         return 0;
11443
11444  err_out:
11445         lpfc_els_free_iocb(phba, elsiocb);
11446         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11447         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11448                          "0256 Issue FDISC: Cannot send IOCB\n");
11449         return 1;
11450 }
11451
11452 /**
11453  * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
11454  * @phba: pointer to lpfc hba data structure.
11455  * @cmdiocb: pointer to lpfc command iocb data structure.
11456  * @rspiocb: pointer to lpfc response iocb data structure.
11457  *
11458  * This routine is the completion callback function to the issuing of a LOGO
11459  * ELS command off a vport. It frees the command IOCB and then decrement the
11460  * reference count held on ndlp for this completion function, indicating that
11461  * the reference to the ndlp is no long needed. Note that the
11462  * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
11463  * callback function and an additional explicit ndlp reference decrementation
11464  * will trigger the actual release of the ndlp.
11465  **/
11466 static void
11467 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11468                         struct lpfc_iocbq *rspiocb)
11469 {
11470         struct lpfc_vport *vport = cmdiocb->vport;
11471         IOCB_t *irsp;
11472         struct lpfc_nodelist *ndlp;
11473         u32 ulp_status, ulp_word4, did, tmo;
11474
11475         ndlp = cmdiocb->ndlp;
11476
11477         ulp_status = get_job_ulpstatus(phba, rspiocb);
11478         ulp_word4 = get_job_word4(phba, rspiocb);
11479
11480         if (phba->sli_rev == LPFC_SLI_REV4) {
11481                 did = get_job_els_rsp64_did(phba, cmdiocb);
11482                 tmo = get_wqe_tmo(cmdiocb);
11483         } else {
11484                 irsp = &rspiocb->iocb;
11485                 did = get_job_els_rsp64_did(phba, rspiocb);
11486                 tmo = irsp->ulpTimeout;
11487         }
11488
11489         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11490                 "LOGO npiv cmpl:  status:x%x/x%x did:x%x",
11491                 ulp_status, ulp_word4, did);
11492
11493         /* NPIV LOGO completes to NPort <nlp_DID> */
11494         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
11495                          "2928 NPIV LOGO completes to NPort x%x "
11496                          "Data: x%x x%x x%x x%x x%x x%lx x%x\n",
11497                          ndlp->nlp_DID, ulp_status, ulp_word4,
11498                          tmo, vport->num_disc_nodes,
11499                          kref_read(&ndlp->kref), ndlp->nlp_flag,
11500                          ndlp->fc4_xpt_flags);
11501
11502         if (ulp_status == IOSTAT_SUCCESS) {
11503                 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
11504                 clear_bit(FC_FABRIC, &vport->fc_flag);
11505                 lpfc_can_disctmo(vport);
11506         }
11507
11508         if (test_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags)) {
11509                 /* Wake up lpfc_vport_delete if waiting...*/
11510                 if (ndlp->logo_waitq)
11511                         wake_up(ndlp->logo_waitq);
11512                 clear_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
11513                 clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
11514                 clear_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags);
11515         }
11516
11517         /* Safe to release resources now. */
11518         lpfc_els_free_iocb(phba, cmdiocb);
11519         lpfc_nlp_put(ndlp);
11520 }
11521
11522 /**
11523  * lpfc_issue_els_npiv_logo - Issue a logo off a vport
11524  * @vport: pointer to a virtual N_Port data structure.
11525  * @ndlp: pointer to a node-list data structure.
11526  *
11527  * This routine issues a LOGO ELS command to an @ndlp off a @vport.
11528  *
11529  * Note that the ndlp reference count will be incremented by 1 for holding the
11530  * ndlp and the reference to ndlp will be stored into the ndlp field of
11531  * the IOCB for the completion callback function to the LOGO ELS command.
11532  *
11533  * Return codes
11534  *   0 - Successfully issued logo off the @vport
11535  *   1 - Failed to issue logo off the @vport
11536  **/
11537 int
11538 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
11539 {
11540         int rc = 0;
11541         struct lpfc_hba  *phba = vport->phba;
11542         struct lpfc_iocbq *elsiocb;
11543         uint8_t *pcmd;
11544         uint16_t cmdsize;
11545
11546         cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
11547         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
11548                                      ELS_CMD_LOGO);
11549         if (!elsiocb)
11550                 return 1;
11551
11552         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
11553         *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
11554         pcmd += sizeof(uint32_t);
11555
11556         /* Fill in LOGO payload */
11557         *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
11558         pcmd += sizeof(uint32_t);
11559         memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
11560
11561         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11562                 "Issue LOGO npiv  did:x%x flg:x%lx",
11563                 ndlp->nlp_DID, ndlp->nlp_flag, 0);
11564
11565         elsiocb->cmd_cmpl = lpfc_cmpl_els_npiv_logo;
11566         set_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
11567         elsiocb->ndlp = lpfc_nlp_get(ndlp);
11568         if (!elsiocb->ndlp) {
11569                 lpfc_els_free_iocb(phba, elsiocb);
11570                 goto err;
11571         }
11572
11573         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
11574         if (rc == IOCB_ERROR) {
11575                 lpfc_els_free_iocb(phba, elsiocb);
11576                 lpfc_nlp_put(ndlp);
11577                 goto err;
11578         }
11579         return 0;
11580
11581 err:
11582         clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
11583         return 1;
11584 }
11585
11586 /**
11587  * lpfc_fabric_block_timeout - Handler function to the fabric block timer
11588  * @t: timer context used to obtain the lpfc hba.
11589  *
11590  * This routine is invoked by the fabric iocb block timer after
11591  * timeout. It posts the fabric iocb block timeout event by setting the
11592  * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
11593  * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
11594  * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
11595  * posted event WORKER_FABRIC_BLOCK_TMO.
11596  **/
11597 void
11598 lpfc_fabric_block_timeout(struct timer_list *t)
11599 {
11600         struct lpfc_hba  *phba = from_timer(phba, t, fabric_block_timer);
11601         unsigned long iflags;
11602         uint32_t tmo_posted;
11603
11604         spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
11605         tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
11606         if (!tmo_posted)
11607                 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
11608         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
11609
11610         if (!tmo_posted)
11611                 lpfc_worker_wake_up(phba);
11612         return;
11613 }
11614
11615 /**
11616  * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
11617  * @phba: pointer to lpfc hba data structure.
11618  *
11619  * This routine issues one fabric iocb from the driver internal list to
11620  * the HBA. It first checks whether it's ready to issue one fabric iocb to
11621  * the HBA (whether there is no outstanding fabric iocb). If so, it shall
11622  * remove one pending fabric iocb from the driver internal list and invokes
11623  * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
11624  **/
11625 static void
11626 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
11627 {
11628         struct lpfc_iocbq *iocb;
11629         unsigned long iflags;
11630         int ret;
11631
11632 repeat:
11633         iocb = NULL;
11634         spin_lock_irqsave(&phba->hbalock, iflags);
11635         /* Post any pending iocb to the SLI layer */
11636         if (atomic_read(&phba->fabric_iocb_count) == 0) {
11637                 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
11638                                  list);
11639                 if (iocb)
11640                         /* Increment fabric iocb count to hold the position */
11641                         atomic_inc(&phba->fabric_iocb_count);
11642         }
11643         spin_unlock_irqrestore(&phba->hbalock, iflags);
11644         if (iocb) {
11645                 iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
11646                 iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
11647                 iocb->cmd_flag |= LPFC_IO_FABRIC;
11648
11649                 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
11650                                       "Fabric sched1:   ste:x%x",
11651                                       iocb->vport->port_state, 0, 0);
11652
11653                 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
11654
11655                 if (ret == IOCB_ERROR) {
11656                         iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
11657                         iocb->fabric_cmd_cmpl = NULL;
11658                         iocb->cmd_flag &= ~LPFC_IO_FABRIC;
11659                         set_job_ulpstatus(iocb, IOSTAT_LOCAL_REJECT);
11660                         iocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
11661                         iocb->cmd_cmpl(phba, iocb, iocb);
11662
11663                         atomic_dec(&phba->fabric_iocb_count);
11664                         goto repeat;
11665                 }
11666         }
11667 }
11668
11669 /**
11670  * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
11671  * @phba: pointer to lpfc hba data structure.
11672  *
11673  * This routine unblocks the  issuing fabric iocb command. The function
11674  * will clear the fabric iocb block bit and then invoke the routine
11675  * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
11676  * from the driver internal fabric iocb list.
11677  **/
11678 void
11679 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
11680 {
11681         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11682
11683         lpfc_resume_fabric_iocbs(phba);
11684         return;
11685 }
11686
11687 /**
11688  * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
11689  * @phba: pointer to lpfc hba data structure.
11690  *
11691  * This routine blocks the issuing fabric iocb for a specified amount of
11692  * time (currently 100 ms). This is done by set the fabric iocb block bit
11693  * and set up a timeout timer for 100ms. When the block bit is set, no more
11694  * fabric iocb will be issued out of the HBA.
11695  **/
11696 static void
11697 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
11698 {
11699         int blocked;
11700
11701         blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11702         /* Start a timer to unblock fabric iocbs after 100ms */
11703         if (!blocked)
11704                 mod_timer(&phba->fabric_block_timer,
11705                           jiffies + msecs_to_jiffies(100));
11706
11707         return;
11708 }
11709
11710 /**
11711  * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
11712  * @phba: pointer to lpfc hba data structure.
11713  * @cmdiocb: pointer to lpfc command iocb data structure.
11714  * @rspiocb: pointer to lpfc response iocb data structure.
11715  *
11716  * This routine is the callback function that is put to the fabric iocb's
11717  * callback function pointer (iocb->cmd_cmpl). The original iocb's callback
11718  * function pointer has been stored in iocb->fabric_cmd_cmpl. This callback
11719  * function first restores and invokes the original iocb's callback function
11720  * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
11721  * fabric bound iocb from the driver internal fabric iocb list onto the wire.
11722  **/
11723 static void
11724 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11725                       struct lpfc_iocbq *rspiocb)
11726 {
11727         struct ls_rjt stat;
11728         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
11729         u32 ulp_word4 = get_job_word4(phba, rspiocb);
11730
11731         WARN_ON((cmdiocb->cmd_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC);
11732
11733         switch (ulp_status) {
11734                 case IOSTAT_NPORT_RJT:
11735                 case IOSTAT_FABRIC_RJT:
11736                         if (ulp_word4 & RJT_UNAVAIL_TEMP)
11737                                 lpfc_block_fabric_iocbs(phba);
11738                         break;
11739
11740                 case IOSTAT_NPORT_BSY:
11741                 case IOSTAT_FABRIC_BSY:
11742                         lpfc_block_fabric_iocbs(phba);
11743                         break;
11744
11745                 case IOSTAT_LS_RJT:
11746                         stat.un.ls_rjt_error_be =
11747                                 cpu_to_be32(ulp_word4);
11748                         if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
11749                                 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
11750                                 lpfc_block_fabric_iocbs(phba);
11751                         break;
11752         }
11753
11754         BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0);
11755
11756         cmdiocb->cmd_cmpl = cmdiocb->fabric_cmd_cmpl;
11757         cmdiocb->fabric_cmd_cmpl = NULL;
11758         cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
11759         cmdiocb->cmd_cmpl(phba, cmdiocb, rspiocb);
11760
11761         atomic_dec(&phba->fabric_iocb_count);
11762         if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
11763                 /* Post any pending iocbs to HBA */
11764                 lpfc_resume_fabric_iocbs(phba);
11765         }
11766 }
11767
11768 /**
11769  * lpfc_issue_fabric_iocb - Issue a fabric iocb command
11770  * @phba: pointer to lpfc hba data structure.
11771  * @iocb: pointer to lpfc command iocb data structure.
11772  *
11773  * This routine is used as the top-level API for issuing a fabric iocb command
11774  * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
11775  * function makes sure that only one fabric bound iocb will be outstanding at
11776  * any given time. As such, this function will first check to see whether there
11777  * is already an outstanding fabric iocb on the wire. If so, it will put the
11778  * newly issued iocb onto the driver internal fabric iocb list, waiting to be
11779  * issued later. Otherwise, it will issue the iocb on the wire and update the
11780  * fabric iocb count it indicate that there is one fabric iocb on the wire.
11781  *
11782  * Note, this implementation has a potential sending out fabric IOCBs out of
11783  * order. The problem is caused by the construction of the "ready" boolen does
11784  * not include the condition that the internal fabric IOCB list is empty. As
11785  * such, it is possible a fabric IOCB issued by this routine might be "jump"
11786  * ahead of the fabric IOCBs in the internal list.
11787  *
11788  * Return code
11789  *   IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
11790  *   IOCB_ERROR - failed to issue fabric iocb
11791  **/
11792 static int
11793 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
11794 {
11795         unsigned long iflags;
11796         int ready;
11797         int ret;
11798
11799         BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1);
11800
11801         spin_lock_irqsave(&phba->hbalock, iflags);
11802         ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
11803                 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11804
11805         if (ready)
11806                 /* Increment fabric iocb count to hold the position */
11807                 atomic_inc(&phba->fabric_iocb_count);
11808         spin_unlock_irqrestore(&phba->hbalock, iflags);
11809         if (ready) {
11810                 iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
11811                 iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
11812                 iocb->cmd_flag |= LPFC_IO_FABRIC;
11813
11814                 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
11815                                       "Fabric sched2:   ste:x%x",
11816                                       iocb->vport->port_state, 0, 0);
11817
11818                 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
11819
11820                 if (ret == IOCB_ERROR) {
11821                         iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
11822                         iocb->fabric_cmd_cmpl = NULL;
11823                         iocb->cmd_flag &= ~LPFC_IO_FABRIC;
11824                         atomic_dec(&phba->fabric_iocb_count);
11825                 }
11826         } else {
11827                 spin_lock_irqsave(&phba->hbalock, iflags);
11828                 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
11829                 spin_unlock_irqrestore(&phba->hbalock, iflags);
11830                 ret = IOCB_SUCCESS;
11831         }
11832         return ret;
11833 }
11834
11835 /**
11836  * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
11837  * @vport: pointer to a virtual N_Port data structure.
11838  *
11839  * This routine aborts all the IOCBs associated with a @vport from the
11840  * driver internal fabric IOCB list. The list contains fabric IOCBs to be
11841  * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
11842  * list, removes each IOCB associated with the @vport off the list, set the
11843  * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
11844  * associated with the IOCB.
11845  **/
11846 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
11847 {
11848         LIST_HEAD(completions);
11849         struct lpfc_hba  *phba = vport->phba;
11850         struct lpfc_iocbq *tmp_iocb, *piocb;
11851
11852         spin_lock_irq(&phba->hbalock);
11853         list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
11854                                  list) {
11855
11856                 if (piocb->vport != vport)
11857                         continue;
11858
11859                 list_move_tail(&piocb->list, &completions);
11860         }
11861         spin_unlock_irq(&phba->hbalock);
11862
11863         /* Cancel all the IOCBs from the completions list */
11864         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
11865                               IOERR_SLI_ABORTED);
11866 }
11867
11868 /**
11869  * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
11870  * @ndlp: pointer to a node-list data structure.
11871  *
11872  * This routine aborts all the IOCBs associated with an @ndlp from the
11873  * driver internal fabric IOCB list. The list contains fabric IOCBs to be
11874  * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
11875  * list, removes each IOCB associated with the @ndlp off the list, set the
11876  * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
11877  * associated with the IOCB.
11878  **/
11879 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
11880 {
11881         LIST_HEAD(completions);
11882         struct lpfc_hba  *phba = ndlp->phba;
11883         struct lpfc_iocbq *tmp_iocb, *piocb;
11884         struct lpfc_sli_ring *pring;
11885
11886         pring = lpfc_phba_elsring(phba);
11887
11888         if (unlikely(!pring))
11889                 return;
11890
11891         spin_lock_irq(&phba->hbalock);
11892         list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
11893                                  list) {
11894                 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
11895
11896                         list_move_tail(&piocb->list, &completions);
11897                 }
11898         }
11899         spin_unlock_irq(&phba->hbalock);
11900
11901         /* Cancel all the IOCBs from the completions list */
11902         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
11903                               IOERR_SLI_ABORTED);
11904 }
11905
11906 /**
11907  * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
11908  * @phba: pointer to lpfc hba data structure.
11909  *
11910  * This routine aborts all the IOCBs currently on the driver internal
11911  * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
11912  * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
11913  * list, removes IOCBs off the list, set the status field to
11914  * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
11915  * the IOCB.
11916  **/
11917 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
11918 {
11919         LIST_HEAD(completions);
11920
11921         spin_lock_irq(&phba->hbalock);
11922         list_splice_init(&phba->fabric_iocb_list, &completions);
11923         spin_unlock_irq(&phba->hbalock);
11924
11925         /* Cancel all the IOCBs from the completions list */
11926         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
11927                               IOERR_SLI_ABORTED);
11928 }
11929
11930 /**
11931  * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport
11932  * @vport: pointer to lpfc vport data structure.
11933  *
11934  * This routine is invoked by the vport cleanup for deletions and the cleanup
11935  * for an ndlp on removal.
11936  **/
11937 void
11938 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
11939 {
11940         struct lpfc_hba *phba = vport->phba;
11941         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
11942         struct lpfc_nodelist *ndlp = NULL;
11943         unsigned long iflag = 0;
11944
11945         spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
11946         list_for_each_entry_safe(sglq_entry, sglq_next,
11947                         &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
11948                 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) {
11949                         lpfc_nlp_put(sglq_entry->ndlp);
11950                         ndlp = sglq_entry->ndlp;
11951                         sglq_entry->ndlp = NULL;
11952
11953                         /* If the xri on the abts_els_sgl list is for the Fport
11954                          * node and the vport is unloading, the xri aborted wcqe
11955                          * likely isn't coming back.  Just release the sgl.
11956                          */
11957                         if (test_bit(FC_UNLOADING, &vport->load_flag) &&
11958                             ndlp->nlp_DID == Fabric_DID) {
11959                                 list_del(&sglq_entry->list);
11960                                 sglq_entry->state = SGL_FREED;
11961                                 list_add_tail(&sglq_entry->list,
11962                                         &phba->sli4_hba.lpfc_els_sgl_list);
11963                         }
11964                 }
11965         }
11966         spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
11967         return;
11968 }
11969
11970 /**
11971  * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
11972  * @phba: pointer to lpfc hba data structure.
11973  * @axri: pointer to the els xri abort wcqe structure.
11974  *
11975  * This routine is invoked by the worker thread to process a SLI4 slow-path
11976  * ELS aborted xri.
11977  **/
11978 void
11979 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
11980                           struct sli4_wcqe_xri_aborted *axri)
11981 {
11982         uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
11983         uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
11984         uint16_t lxri = 0;
11985
11986         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
11987         unsigned long iflag = 0;
11988         struct lpfc_nodelist *ndlp;
11989         struct lpfc_sli_ring *pring;
11990
11991         pring = lpfc_phba_elsring(phba);
11992
11993         spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
11994         list_for_each_entry_safe(sglq_entry, sglq_next,
11995                         &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
11996                 if (sglq_entry->sli4_xritag == xri) {
11997                         list_del(&sglq_entry->list);
11998                         ndlp = sglq_entry->ndlp;
11999                         sglq_entry->ndlp = NULL;
12000                         list_add_tail(&sglq_entry->list,
12001                                 &phba->sli4_hba.lpfc_els_sgl_list);
12002                         sglq_entry->state = SGL_FREED;
12003                         spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock,
12004                                                iflag);
12005
12006                         if (ndlp) {
12007                                 lpfc_set_rrq_active(phba, ndlp,
12008                                         sglq_entry->sli4_lxritag,
12009                                         rxid, 1);
12010                                 lpfc_nlp_put(ndlp);
12011                         }
12012
12013                         /* Check if TXQ queue needs to be serviced */
12014                         if (pring && !list_empty(&pring->txq))
12015                                 lpfc_worker_wake_up(phba);
12016                         return;
12017                 }
12018         }
12019         spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
12020         lxri = lpfc_sli4_xri_inrange(phba, xri);
12021         if (lxri == NO_XRI)
12022                 return;
12023
12024         spin_lock_irqsave(&phba->hbalock, iflag);
12025         sglq_entry = __lpfc_get_active_sglq(phba, lxri);
12026         if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
12027                 spin_unlock_irqrestore(&phba->hbalock, iflag);
12028                 return;
12029         }
12030         sglq_entry->state = SGL_XRI_ABORTED;
12031         spin_unlock_irqrestore(&phba->hbalock, iflag);
12032         return;
12033 }
12034
12035 /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req.
12036  * @vport: pointer to virtual port object.
12037  * @ndlp: nodelist pointer for the impacted node.
12038  *
12039  * The driver calls this routine in response to an SLI4 XRI ABORT CQE
12040  * or an SLI3 ASYNC_STATUS_CN event from the port.  For either event,
12041  * the driver is required to send a LOGO to the remote node before it
12042  * attempts to recover its login to the remote node.
12043  */
12044 void
12045 lpfc_sli_abts_recover_port(struct lpfc_vport *vport,
12046                            struct lpfc_nodelist *ndlp)
12047 {
12048         struct Scsi_Host *shost;
12049         struct lpfc_hba *phba;
12050         unsigned long flags = 0;
12051
12052         shost = lpfc_shost_from_vport(vport);
12053         phba = vport->phba;
12054         if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
12055                 lpfc_printf_log(phba, KERN_INFO,
12056                                 LOG_SLI, "3093 No rport recovery needed. "
12057                                 "rport in state 0x%x\n", ndlp->nlp_state);
12058                 return;
12059         }
12060         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12061                         "3094 Start rport recovery on shost id 0x%x "
12062                         "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x "
12063                         "flag 0x%lx\n",
12064                         shost->host_no, ndlp->nlp_DID,
12065                         vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
12066                         ndlp->nlp_flag);
12067         /*
12068          * The rport is not responding.  Remove the FCP-2 flag to prevent
12069          * an ADISC in the follow-up recovery code.
12070          */
12071         spin_lock_irqsave(&ndlp->lock, flags);
12072         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
12073         spin_unlock_irqrestore(&ndlp->lock, flags);
12074         set_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
12075         lpfc_unreg_rpi(vport, ndlp);
12076 }
12077
12078 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport)
12079 {
12080         bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE);
12081 }
12082
12083 static void
12084 lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max)
12085 {
12086         u32 i;
12087
12088         if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE))
12089                 return;
12090
12091         for (i = min; i <= max; i++)
12092                 set_bit(i, vport->vmid_priority_range);
12093 }
12094
12095 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid)
12096 {
12097         set_bit(ctcl_vmid, vport->vmid_priority_range);
12098 }
12099
12100 u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport)
12101 {
12102         u32 i;
12103
12104         i = find_first_bit(vport->vmid_priority_range,
12105                            LPFC_VMID_MAX_PRIORITY_RANGE);
12106
12107         if (i == LPFC_VMID_MAX_PRIORITY_RANGE)
12108                 return 0;
12109
12110         clear_bit(i, vport->vmid_priority_range);
12111         return i;
12112 }
12113
12114 #define MAX_PRIORITY_DESC       255
12115
12116 static void
12117 lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
12118                    struct lpfc_iocbq *rspiocb)
12119 {
12120         struct lpfc_vport *vport = cmdiocb->vport;
12121         struct priority_range_desc *desc;
12122         struct lpfc_dmabuf *prsp = NULL;
12123         struct lpfc_vmid_priority_range *vmid_range = NULL;
12124         u32 *data;
12125         struct lpfc_dmabuf *dmabuf = cmdiocb->cmd_dmabuf;
12126         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
12127         u32 ulp_word4 = get_job_word4(phba, rspiocb);
12128         u8 *pcmd, max_desc;
12129         u32 len, i;
12130         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
12131
12132         prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
12133         if (!prsp)
12134                 goto out;
12135
12136         pcmd = prsp->virt;
12137         data = (u32 *)pcmd;
12138         if (data[0] == ELS_CMD_LS_RJT) {
12139                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12140                                  "3277 QFPA LS_RJT x%x  x%x\n",
12141                                  data[0], data[1]);
12142                 goto out;
12143         }
12144         if (ulp_status) {
12145                 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
12146                                  "6529 QFPA failed with status x%x  x%x\n",
12147                                  ulp_status, ulp_word4);
12148                 goto out;
12149         }
12150
12151         if (!vport->qfpa_res) {
12152                 max_desc = FCELSSIZE / sizeof(*vport->qfpa_res);
12153                 vport->qfpa_res = kcalloc(max_desc, sizeof(*vport->qfpa_res),
12154                                           GFP_KERNEL);
12155                 if (!vport->qfpa_res)
12156                         goto out;
12157         }
12158
12159         len = *((u32 *)(pcmd + 4));
12160         len = be32_to_cpu(len);
12161         memcpy(vport->qfpa_res, pcmd, len + 8);
12162         len = len / LPFC_PRIORITY_RANGE_DESC_SIZE;
12163
12164         desc = (struct priority_range_desc *)(pcmd + 8);
12165         vmid_range = vport->vmid_priority.vmid_range;
12166         if (!vmid_range) {
12167                 vmid_range = kcalloc(MAX_PRIORITY_DESC, sizeof(*vmid_range),
12168                                      GFP_KERNEL);
12169                 if (!vmid_range) {
12170                         kfree(vport->qfpa_res);
12171                         goto out;
12172                 }
12173                 vport->vmid_priority.vmid_range = vmid_range;
12174         }
12175         vport->vmid_priority.num_descriptors = len;
12176
12177         for (i = 0; i < len; i++, vmid_range++, desc++) {
12178                 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
12179                                  "6539 vmid values low=%d, high=%d, qos=%d, "
12180                                  "local ve id=%d\n", desc->lo_range,
12181                                  desc->hi_range, desc->qos_priority,
12182                                  desc->local_ve_id);
12183
12184                 vmid_range->low = desc->lo_range << 1;
12185                 if (desc->local_ve_id == QFPA_ODD_ONLY)
12186                         vmid_range->low++;
12187                 if (desc->qos_priority)
12188                         vport->vmid_flag |= LPFC_VMID_QOS_ENABLED;
12189                 vmid_range->qos = desc->qos_priority;
12190
12191                 vmid_range->high = desc->hi_range << 1;
12192                 if ((desc->local_ve_id == QFPA_ODD_ONLY) ||
12193                     (desc->local_ve_id == QFPA_EVEN_ODD))
12194                         vmid_range->high++;
12195         }
12196         lpfc_init_cs_ctl_bitmap(vport);
12197         for (i = 0; i < vport->vmid_priority.num_descriptors; i++) {
12198                 lpfc_vmid_set_cs_ctl_range(vport,
12199                                 vport->vmid_priority.vmid_range[i].low,
12200                                 vport->vmid_priority.vmid_range[i].high);
12201         }
12202
12203         vport->vmid_flag |= LPFC_VMID_QFPA_CMPL;
12204  out:
12205         lpfc_els_free_iocb(phba, cmdiocb);
12206         lpfc_nlp_put(ndlp);
12207 }
12208
12209 int lpfc_issue_els_qfpa(struct lpfc_vport *vport)
12210 {
12211         struct lpfc_hba *phba = vport->phba;
12212         struct lpfc_nodelist *ndlp;
12213         struct lpfc_iocbq *elsiocb;
12214         u8 *pcmd;
12215         int ret;
12216
12217         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
12218         if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12219                 return -ENXIO;
12220
12221         elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp,
12222                                      ndlp->nlp_DID, ELS_CMD_QFPA);
12223         if (!elsiocb)
12224                 return -ENOMEM;
12225
12226         pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
12227
12228         *((u32 *)(pcmd)) = ELS_CMD_QFPA;
12229         pcmd += 4;
12230
12231         elsiocb->cmd_cmpl = lpfc_cmpl_els_qfpa;
12232
12233         elsiocb->ndlp = lpfc_nlp_get(ndlp);
12234         if (!elsiocb->ndlp) {
12235                 lpfc_els_free_iocb(vport->phba, elsiocb);
12236                 return -ENXIO;
12237         }
12238
12239         ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2);
12240         if (ret != IOCB_SUCCESS) {
12241                 lpfc_els_free_iocb(phba, elsiocb);
12242                 lpfc_nlp_put(ndlp);
12243                 return -EIO;
12244         }
12245         vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED;
12246         return 0;
12247 }
12248
12249 int
12250 lpfc_vmid_uvem(struct lpfc_vport *vport,
12251                struct lpfc_vmid *vmid, bool instantiated)
12252 {
12253         struct lpfc_vem_id_desc *vem_id_desc;
12254         struct lpfc_nodelist *ndlp;
12255         struct lpfc_iocbq *elsiocb;
12256         struct instantiated_ve_desc *inst_desc;
12257         struct lpfc_vmid_context *vmid_context;
12258         u8 *pcmd;
12259         u32 *len;
12260         int ret = 0;
12261
12262         ndlp = lpfc_findnode_did(vport, Fabric_DID);
12263         if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12264                 return -ENXIO;
12265
12266         vmid_context = kmalloc(sizeof(*vmid_context), GFP_KERNEL);
12267         if (!vmid_context)
12268                 return -ENOMEM;
12269         elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2,
12270                                      ndlp, Fabric_DID, ELS_CMD_UVEM);
12271         if (!elsiocb)
12272                 goto out;
12273
12274         lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
12275                          "3427 Host vmid %s %d\n",
12276                          vmid->host_vmid, instantiated);
12277         vmid_context->vmp = vmid;
12278         vmid_context->nlp = ndlp;
12279         vmid_context->instantiated = instantiated;
12280         elsiocb->vmid_tag.vmid_context = vmid_context;
12281         pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
12282
12283         if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0,
12284                         sizeof(vport->lpfc_vmid_host_uuid)))
12285                 memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid,
12286                        sizeof(vport->lpfc_vmid_host_uuid));
12287
12288         *((u32 *)(pcmd)) = ELS_CMD_UVEM;
12289         len = (u32 *)(pcmd + 4);
12290         *len = cpu_to_be32(LPFC_UVEM_SIZE - 8);
12291
12292         vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8);
12293         vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG);
12294         vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE);
12295         memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid,
12296                sizeof(vem_id_desc->vem_id));
12297
12298         inst_desc = (struct instantiated_ve_desc *)(pcmd + 32);
12299         inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
12300         inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE);
12301         memcpy(inst_desc->global_vem_id, vmid->host_vmid,
12302                sizeof(inst_desc->global_vem_id));
12303
12304         bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID);
12305         bf_set(lpfc_instantiated_local_id, inst_desc,
12306                vmid->un.cs_ctl_vmid);
12307         if (instantiated) {
12308                 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
12309         } else {
12310                 inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG);
12311                 lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid);
12312         }
12313         inst_desc->word6 = cpu_to_be32(inst_desc->word6);
12314
12315         elsiocb->cmd_cmpl = lpfc_cmpl_els_uvem;
12316
12317         elsiocb->ndlp = lpfc_nlp_get(ndlp);
12318         if (!elsiocb->ndlp) {
12319                 lpfc_els_free_iocb(vport->phba, elsiocb);
12320                 goto out;
12321         }
12322
12323         ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0);
12324         if (ret != IOCB_SUCCESS) {
12325                 lpfc_els_free_iocb(vport->phba, elsiocb);
12326                 lpfc_nlp_put(ndlp);
12327                 goto out;
12328         }
12329
12330         return 0;
12331  out:
12332         kfree(vmid_context);
12333         return -EIO;
12334 }
12335
12336 static void
12337 lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb,
12338                    struct lpfc_iocbq *rspiocb)
12339 {
12340         struct lpfc_vport *vport = icmdiocb->vport;
12341         struct lpfc_dmabuf *prsp = NULL;
12342         struct lpfc_vmid_context *vmid_context =
12343             icmdiocb->vmid_tag.vmid_context;
12344         struct lpfc_nodelist *ndlp = icmdiocb->ndlp;
12345         u8 *pcmd;
12346         u32 *data;
12347         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
12348         u32 ulp_word4 = get_job_word4(phba, rspiocb);
12349         struct lpfc_dmabuf *dmabuf = icmdiocb->cmd_dmabuf;
12350         struct lpfc_vmid *vmid;
12351
12352         vmid = vmid_context->vmp;
12353         if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12354                 ndlp = NULL;
12355
12356         prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
12357         if (!prsp)
12358                 goto out;
12359         pcmd = prsp->virt;
12360         data = (u32 *)pcmd;
12361         if (data[0] == ELS_CMD_LS_RJT) {
12362                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12363                                  "4532 UVEM LS_RJT %x %x\n", data[0], data[1]);
12364                 goto out;
12365         }
12366         if (ulp_status) {
12367                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12368                                  "4533 UVEM error status %x: %x\n",
12369                                  ulp_status, ulp_word4);
12370                 goto out;
12371         }
12372         spin_lock(&phba->hbalock);
12373         /* Set IN USE flag */
12374         vport->vmid_flag |= LPFC_VMID_IN_USE;
12375         phba->pport->vmid_flag |= LPFC_VMID_IN_USE;
12376         spin_unlock(&phba->hbalock);
12377
12378         if (vmid_context->instantiated) {
12379                 write_lock(&vport->vmid_lock);
12380                 vmid->flag |= LPFC_VMID_REGISTERED;
12381                 vmid->flag &= ~LPFC_VMID_REQ_REGISTER;
12382                 write_unlock(&vport->vmid_lock);
12383         }
12384
12385  out:
12386         kfree(vmid_context);
12387         lpfc_els_free_iocb(phba, icmdiocb);
12388         lpfc_nlp_put(ndlp);
12389 }